ZKH 10 PCS Masonry Drill Bit Set, Cement Drill bits Made of Cemented Carbide,3/16 to 1/2 inch Masonry Drill bits for Concrete,Ceramics,Glass, Brick Drill bit,Masonry bit.

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【Rust Resistant and Durable】: Our Concrete drill bit set is treated with phosphated black coating and paint to ensure rust resistance and prolong the life of the masonry drill bit. 【EASY CHIP REMOVAL】: The U-shaped grooves and spiral shank design of the Concrete drill bits allow for efficient chip removal during the drilling process, resulting in smoother, more seamless drilling. 【QUALITY MATERIALS】: These Masonry bit set are made of high quality carbide tips that can withstand corrosion from hard materials and are durable. 【HEX SHANK】: The hexagonal shank design of the brick drill bit can firmly grip the shank during drilling and prevent slippage. Sizes include 3/16" x 2 pieces, 1/4" x 4 pieces, 5/16" x 2 pieces, 3/8", 1/2". 【WIDE APPLICATIONS】: Drill bits for concrete,drilling holes in ceramic, tile, red brick, brick walls, glass, sheet metal, aluminium, plastic and wood panels.