Mgtgbao Concrete Drill Bit Set, 10pcs Masonry Drill Bits Set Carbide Tip for Glass, Brick, Tile, Concrete, Plastic and Wood with Size 3/16 (5mm),1/4 (6mm), 5/16 (8mm),3/8 (10mm), 1/2 (12mm).-Fast Shipping

Description

NEW DESIGN: U-shaped drain groove, spiral handle design, easy to remove chips during work, smoother drilling. 10 pcs drill bit set with 5 different sizes: that is3/16 (5mm),1/4 (6mm), 5/16 (8mm) ,3/8 (10mm), 1/2 (12mm) fit your different needs.

EXQUISITE CRAFTSMANSHIP: The surface of the drill bit is treated by fine polishing, and the new electroplating process can prevent the drill bit from rusting and prolong the life of the drill bit.

HIGH-QUALITY HARD ALLOY: The cutter head is made of cemented carbide. Hardness up to 45HRC, Triangular cutter head resistance is smaller. And it can improve work efficiency, higher hardness than ordinary drill bit, more wear-resistant.

NON-SLIP 1/4 HEX SHANK: 1/4 hex shank which makes the electric drill more tight and not easy to slip Making it safer to use

WIDELY USED: It can be used for drilling walls, bricks, wood, glass, tiles, stainless steel, concrete, etc. Remember to add Water or coolant when drilling.