915 Generation Drill Bit Set 7 Pieces,Triple-cornered Alloy(6/6/6/6/8/10/12

PREMIUM MATERIAL DRILL BITS - The drill bit is made of hard and durable alloy, and the hardness is higher than that of drill bit. Strong strength and wear resistance and provides a life.
When drilling hard material (glass, porcelain floor tile, or granite), use water for lubrication.
WIDELY USAGE - Drill bits set is perfect for drilling in all kinds of materials inlcuding ceramic tile, concrete, tile, brick, wood, plastic, glass, masonry, and more. Note: When drilling hard material (glass, porcelain floor tile, or granite), use water for lubrication.
FEATURES - The drill bits openings are , , and free of smashed edges will not cause tremors easy positioning can increased opening speed; U type slot design with fast drilling dust remove, 3-flats allows drill bit to be tightly and stably in power drill.
Specification:
Material: Carbide
color:gold
Shaft: 3-Flat Shaft
Size: 6mm, 6mm, 6mm, 6mm, 8mm, 10mm, 12mm (1/4 inch , 1/4 inch , 1/4 inch , 1/4 inch , 5/16 inch , 3/8 inch , 1/2 inch )
Package Contents:
4 * glass drill * 6mm (1/4 inch )
1 * glass drill * 8mm (5/16 inch )
1 * glass drill * 10mm (3/8 inch )
1 * glass drill * 12mm (1/2 inch )
Only the above package content, other are not included.
Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.