qiya 4pcs 1/4in Hex Handle Vacuum Brazed Diamond Dry Drill Bits Hole Saw Cutter 6 8mm

Features: *Brand new unused *Made of material *For drilling granite & marble masonry concrete tile/ceramic glass hard plastic..... *Dry drilling without water. Very high efficiency multi-purpose drilling *When using brazed diamond hole saw the speed of the electric tool should not be lower than 2000 rpm/min The faster the speed the better the effect.the hole saw should not be pressed down very hard otherwise it is easy to damage the hole saw. Specifications: Type:Vaccum Brazed Diamond Dry Drill Bits Color:black Handle ：1/4inch Hex （6.35mm） Model:6mm 8mm(2 each) Quantity:1pc Package Included: 1*Vaccum Brazed Diamond Dry Drill Bits Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.