Model: Rewin RKB006 / RKB008 / RKB010 / RKB012 / RKB014 Good Performance and long life Excellent for making clean and accurate hole on glass and tile Works better with a electric drill(Excluding in the item) These Diamond Bits are Capable of Drilling into Extremely Hard Materials Such as Stone and Glass.Use a Low Speed Setting and Proper Cooling,Such as Water,to Superior Performance-Cut Holes in Marble,Slate,Glass,Tile,Stone,etc. Great for Home,Hobby,Craft,Construction,etc. Color : Silver Material : Metal ***REMARK : Any inquires, please chat with us at Shopee chat***