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Discount Details

  • The promo code 290240 must be entered on the Shopping Cart page.
  • To qualify for this offer, your order subtotal must equal $250 or more. Excludes gift cards, free item offers, warranties, Advantage memberships, tax, & shipping.
  • Promo code not valid on prior purchases or on Honda & Stihl products, and cannot be combined with other promotional offers.
  • Valid online and in participating retail stores.
  • Limited time offer. Subject to change without notice.

Product Summary

The Specialty Diamond GB1H Glass Grinding Bit (3/8in. × 50 grit) is designed for aggressive grinding, shaping, and stock removal in glass, stained glass, tile, stone, and other hard materials. With its coarse 50-grit surface, it removes material quickly and is ideal for heavy shaping and edge preparation before finer finishing. The bit is made from a single-piece brass body that resists fatigue cracking during high RPM use and vibration. A specialized bonding process secures multiple layers of diamond for extended wear life and consistent results. Uniform diamond bonding reduces chipping and provides better control when working on delicate or thin materials. This bit mounts with a universal arbor and set screw design that fits 0.312in. (7.92 mm) spindles, making it compatible with Inland grinders, WIZ, Super WIZ, Wizling CG, Wizard IV, Impulse, WIZ CG, and other popular grinder systems.

What's Included

    (1) Glass Grinding Bit 3/8 Inch X 50 Grit

Features + Benefits

  • Removes material quickly with a coarse 50-grit surface for aggressive grinding and shaping.
  • Extends tool life and maintains consistent performance with a specialized bonding process that secures multiple layers of diamond.
  • Reduces chipping and preserves delicate workpieces through uniform diamond bonding.
  • Handles heavy shaping, profiling, and edge preparation in glass, stained glass, tile, ceramics, stone, and other hard surfaces.
  • Withstands high RPM use with a durable one-piece brass body that resists cracking and deformation.

Key Specs

AttributeSpecification

item#

7391147

Brand

Specialty Diamond

Manufacturer's Warranty

1 month limited warranty

Ship Weight

0.1 LB

Grit Type

Coarse

Pad Diameter

0.37 in

Shank Size

1/4 in
AttributeSpecification

Disc Diameter

0.37 in

File Shape

Round

Material

Multiple

Accessory Type

Grinding Stone

Pieces (qty.)

1

Product Weight

0.1000 lb

Dimensions L x W x H (in.)

1.62 x 0.37 x 0.62 in

Warranty

Manufacturer's Warranty

1 month limited warranty