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Alpha Sandpaper Discs

For Sanding & Polishing Marble and Soft Stone

Original price $21.40 - Original price $30.29
Original price $21.40
$21.40
$21.40 - $30.29
Current price $21.40
Alpha  |  MPN: MP40080  |  UPC: 749173440069
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Size: 4"
Grit: 80

Sandpaper Specifications

  • Disc Size: 4"
  • Grit: 80
  • Backing Type: Hook & Loop
  • Abrasive Type: Silicon carbide
  • Application: Aggressive sanding and material removal
  • Material Compatibility: Marble, travertine, terrazzo, onyx, glass, metal, wood, primer, paint

Alpha® Sandpaper Discs are waterproof sanding and polishing discs designed for marble and other soft natural stone surfaces. Made with silicon carbide abrasive and hook and loop backing, they provide consistent performance for wet or dry surface finishing.

Key Features
  • Silicon carbide abrasive delivers consistent cutting on soft stone surfaces
  • Waterproof design supports both wet and dry sanding applications
  • Resists clogging during wet use for longer disc life
  • Hook and loop backing allows quick and easy disc changes
  • Wide grit range supports multiple sanding and polishing stages
  • Multi-surface capability expands use beyond stone applications
Best For
  • Sanding and polishing marble and soft natural stone surfaces
  • Refining surface finishes during fabrication and restoration work
  • Switching between grits for progressive sanding and polishing steps
  • Performing wet or dry sanding across multiple material types

Why Professionals Choose Tile This

  • Free shipping on eligible orders $200+
  • Same-day shipping before 2 PM CST (Mon–Sat) for in-stock items
  • Eligible for our Contractor Pricing Program
  • Authorized Alpha Dealer
Alpha Sandpaper Discs 4" / 80 $21.40

Description

Alpha® Sandpaper discs are waterproof, hook and loop backed sanding and polishing discs made with silicon carbide abrasive. They are designed for use on marble and other softer natural stones, supporting both wet and dry applications during fabrication, installation, and restoration.

The silicon carbide abrasive resists clogging when used wet, helping extend disc life while maintaining consistent cutting performance. Hook and loop backing allows for quick disc changes when used with standard backer pads or the Alpha® GV5000 backer pad.

Key Features

  • Silicon Carbide Abrasive: Suitable for sanding and polishing marble, travertine, terrazzo, and onyx.
  • Waterproof Hook & Loop Backing: Supports wet use and allows fast disc changes.
  • Resists Clogging When Wet: Helps maintain cutting performance and extend disc life.
  • Wet or Dry Use: Can be used dry when necessary while remaining durable.
  • Multi-Surface Capability: Can also be used on glass, metal, wood, bondo, primer, and paint.
  • Wide Grit Selection: Available in grits from #80 through #600 using the U.S. CAMI grit system.

Specifications

Part No. Size Type Grit Qty
MP40080 4" Hook & Loop 80 50
MP40120 4" Hook & Loop 120 50
MP40240 4" Hook & Loop 240 50
MP40320 4" Hook & Loop 320 50
MP40400 4" Hook & Loop 400 50
MP40500 4" Hook & Loop 500 50
MP40600 4" Hook & Loop 600 50
MP40KIT 4" Hook & Loop Assortment 50
MP50080 5" Hook & Loop 80 50
MP50120 5" Hook & Loop 120 50
MP50240 5" Hook & Loop 240 50
MP50320 5" Hook & Loop 320 50
MP50400 5" Hook & Loop 400 50
MP50500 5" Hook & Loop 500 50
MP50600 5" Hook & Loop 600 50
MP50KIT 5" Hook & Loop Assortment 50

Alpha® Sandpaper provides consistent sanding and polishing performance across a wide range of materials and grit options, supporting wet and dry surface finishing with hook and loop convenience.

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Frequently Asked Questions

What materials can Alpha Sandpaper be used on?
Alpha Sandpaper is designed for marble and other soft natural stones such as travertine, terrazzo, and onyx. It can also be used on glass, metal, wood, bondo, primer, and paint, making it versatile for fabrication, installation, and restoration work.
Can these sanding discs be used wet or dry?
Yes. Alpha Sandpaper supports both wet and dry applications. The silicon carbide abrasive resists clogging when used wet, helping maintain cutting performance and extend disc life during polishing and sanding.
What backing system do these discs use?
Alpha Sandpaper uses a hook and loop backing for quick disc changes. It is compatible with standard hook and loop backer pads, including the Alpha GV5000 backer pad.
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