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Stockpinturas

Mirka Polarshine M25 — Medium-Fine Compound Paste Marine and Automotive 1 L

31.38 €
31.38 €
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📦 Shipping and Returns Policy

🚚 Shipping

Free shipping based on destination and minimum order

  • Spain (Peninsula): Free shipping on orders over €90
  • Portugal: Free shipping on orders over €300
  • Balearic Islands: Free shipping on orders over €500
  • Europe (enabled countries): Free shipping on orders over €1000

Order processing

  • Orders placed before 12:00h are processed on the same business day. Orders placed after this time will be processed on the next business day.
  • Payments made by bank transfer will be processed once the amount has been received.
  • The use of bank transfer is not recommended for urgent orders.
  • All orders include a tracking number, which will be sent by email.
  • Carriers: SEUR, CTT, UPS, Transaher or other logistics operators depending on availability and type of shipment.

Orders over 20 kg may be shipped palletized by specialized logistics companies.

Shipping methods

  • Express Shipping: 24/48 business hours
  • Fast Shipping: 24/72 business hours
  • Economy Shipping: 48/78 business hours
  • Pallet Shipping: 48/72 business hours (curbside delivery)

🕒 Deliveries are made from Monday to Friday, until 8:00 p.m., excluding weekends and holidays.


Delivery times and shipping agencies

The delivery times indicated on StockPinturas.com are merely indicative and do not constitute a contractual commitment, as they depend on the operation of external transport companies and circumstances beyond the control of StockPinturas.com, such as logistical incidents, route saturation, adverse weather conditions, or other force majeure causes.

For palletized shipments with curbside delivery, the usual delivery time is 48 to 72 business hours, provided the order has been correctly confirmed, prepared, and dispatched.

StockPinturas.com reserves the right to select the most appropriate transport agency based on the weight, volume, destination, and nature of the order, and may use different logistics operators without any modification to the sales conditions.

Possible delays attributable to the transport company will not give rise to compensation, order cancellation, or refund of shipping costs, provided the merchandise has been correctly dispatched from our facilities.


Delivery attempts

  • In case of the recipient's absence, a second delivery attempt will be made.
  • After two failed attempts, the merchandise may be deposited at the corresponding transport company's branch.
  • If the order cannot be delivered due to reasons attributable to the recipient and is returned to the origin, shipping costs will not be refundable.
  • If a new shipment is requested, the customer must pay the transport costs again.

📌 Some bulky or special products may be excluded from free shipping. In case of doubt, it is recommended to request a quote in advance.

Free shipping conditions

Free shipping applies only to standard products within the peninsula that do not require special transportation.

Some heavy, bulky, or palletized products (such as mortars, single-layer paints, large buckets, etc.) may not be subject to the free shipping promotion, even if the order exceeds the established minimum amount.

In these cases, transport costs will be calculated individually based on weight, volume, and destination, and will be communicated to the customer before shipment.

StockPinturas reserves the right to cancel the order and issue a refund if the customer does not accept the special transport conditions.


🔄 Returns

Return period

15 calendar days from receipt of the order.

Return costs

Will be borne by the customer, except in the following cases:

  • Defective product
  • Incorrect order

Return conditions

  • Products unused, in perfect condition and with their original packaging.
  • Manipulated, used or incomplete products will not be accepted.
  • Returns of products on clearance or refurbished are not allowed.

Return procedure

  • Send an email to info@stockpinturas.com
  • Subject: Return (#order number)
  • Indicate the reason for the return
  • Include the order number
  • Attach images in case of defective product
  • Once the return is approved, the corresponding exchange or refund will be processed

💰 Refunds

Refund period

Up to 14 calendar days from receipt of the returned product.

Refund amount

  • The total purchase amount (product and shipping costs) will be refunded only when the return is not voluntary.
  • For voluntary returns, shipping costs will not be refunded.

Refund conditions

  • The product must be in perfect condition.
  • It is not mandatory to keep the original packaging, although its absence may imply a depreciation of the amount to be refunded.

❓ Frequently Asked Questions

How long will my order take?

The customer will receive a tracking link by email. The delivery time will depend on the selected shipping method, product availability, and correct payment confirmation. Most orders are prepared and dispatched on the same business day if placed before 13:00h.

About the product

Mirka Polarshine M25 is the medium-fine grade paste polish in the Polarshine range — the intermediate step between the cutting of M35 and the fine finish of M10, designed to refine the surface after initial cutting by removing its marks without yet reaching the final step. Compatible with gel coat, lacquers, top coats, and high-gloss composites. Silicone-free. 1 liter.

When to use M25 in the polishing process?

  • ✓ Always after M35 — to remove cutting marks before the fine step
  • ✓ As a single step on surfaces with moderate scratches that do not require M35
  • ✓ On gel coat with medium-high oxidation — removes more than M10 without being as aggressive as M35
  • ✓ On high-gloss composites and lacquers where M35 would be too aggressive
  • ✓ Refinement step before M10 or Black 12 in 3-stage processes

Why M25 is the key step in the process

  • Medium-fine grade — the perfect bridge between M35 and M10 — M35 is aggressive and leaves cutting marks; M10 is too fine to remove them alone; M25 works at just the right intermediate level, preparing the surface for the final finish without excessive effort
  • Controlled temperature — safe on lacquers and gel coat — like the entire Polarshine range, M25 is formulated to keep the surface at a low temperature during polishing, preventing burns on delicate lacquers and thin gel coat
  • Versatile — can be the only step for moderate defects — on surfaces with medium oxidation or P1200–P1500 sanding scratches, M25 can be used directly as the first and only polishing step before the fine finish, skipping M35
  • Silicone-free — compatible with subsequent repainting — the absence of silicone allows M25 to be used in workshops where the piece may be repainted after polishing

Mirka Polarshine Range — choose your step

Product Grade Ideal Use Special for
M35 Medium Step 1 — Cutting Gel coat, lacquers, composites
M25 ★ Medium-fine Intermediate step — Refinement Gel coat and paints
M10 / M10 250cc Fine Fine step / Finish Lacquers with pollution and marks
Black 12 Fine silicone-free Anti-hologram finish Dark surfaces and carbon

Technical Specifications

Reference Mirka Polarshine M25
Abrasive Grade Medium-fine
Process Step Intermediate step — Refinement after M35
Compatible Substrates Gel coat · Lacquers · Top coats · Composites
Silicone Silicone-free
Uses Nautical · Automotive
Format 1 liter

Frequently Asked Questions

Can I skip M25 and go directly from M35 to M10?+
On light surfaces and when less final gloss is required, yes, it is possible to skip M25. However, on dark colors, high-gloss lacquers, and boat gel coats where the result must be impeccable, M25 makes a difference: M10 alone cannot completely remove the marks from M35, and the final finish will have more visible holograms under direct light.
Which buffing pad should I use with M25?+
M25 works well with both a yellow wool pad (for more cutting) and a medium-density foam pad. For the intermediate step after M35, a medium foam pad is usually the best option: aggressive enough to remove the cutting marks without being as aggressive as wool. Use with an orbital or random orbital polisher.
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