Pls note：The diamond drill bit have no central pilot drill. Features: *New good quality diamond drill bit. Strong opening performance, fast drilling speed, smooth drilling without gaps, suitable for drilling marble, concrete, granite, tile, glass, etc. *Good quality diamond brazing technology, sharp tooth cutter, smooth hole opening without broken edge and no trembling phenomenon. *Chip hole design, which is conducive to chip removal, can be easily mounted on the electric drill to save manpower. Small size and light weight, convenient for users to carry Specification: *Material：Diamond + Metal *Color: Red *Hole Diameter:12MM/20MM/22MM/25MM/30MM/32MM/40MM/50MM/65MM/70MM/100MM optional *Qty:2Pcs Packaging includes： 2Pcs Diamond Drill Bit.
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