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Alpha Sandpaper Discs

Waterproof Sanding Discs for Stone Surface Finishing

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 hook-and-loop sanding discs made with silicon carbide abrasive for wet or dry sanding and polishing. They are designed for marble, travertine, terrazzo, onyx, and other softer materials where controlled surface preparation and finishing are required.

Key Features
  • Silicon Carbide Abrasive: Designed for sanding and polishing soft stone surfaces.
  • Waterproof Construction: Suitable for wet or dry use.
  • Hook & Loop Backing: Allows fast disc changes during sanding.
  • Clog-Resistant Design: Maintains cutting action during wet sanding.
  • Multiple Grit Options: Available from 80 to 600 grit.
  • Multi-Surface Use: Suitable for stone, glass, metal, wood, primer, and paint.
Best For
  • Marble, travertine, terrazzo, and onyx finishing
  • Wet sanding and polishing applications
  • Stone restoration and refinishing work
  • Surface preparation before polishing
  • Glass, metal, wood, and painted surface sanding

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

The Alpha Sandpaper Discs are waterproof hook-and-loop sanding discs manufactured with silicon carbide abrasive for wet or dry surface finishing. They are designed for sanding and polishing marble, travertine, terrazzo, onyx, and other softer natural stone materials.

The silicon carbide abrasive resists loading during wet use, while the hook-and-loop backing allows quick attachment to compatible backer pads, including the Alpha GV5000 Backer Pad. Available in 4" and 5" diameters with grits from 80 to 600, these discs support multiple stages of surface preparation and finishing.

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

Frequently Asked Questions

What materials can Alpha Sandpaper Discs be used on?
The Alpha Sandpaper Discs are designed for marble, travertine, terrazzo, and onyx. They can also be used on glass, metal, wood, primer, paint, and similar surfaces.
Can these discs be used wet or dry?
Yes. The waterproof construction allows both wet and dry sanding applications.
What grit options are available?
The Alpha Sandpaper Discs are available in 80, 120, 240, 320, 400, 500, and 600 grit, along with assorted grit kits.
What backing system do these discs use?
These discs use a hook-and-loop backing for fast attachment and removal from compatible backer pads.
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