1)Sharp and durable, Fast speed, Smooth hole without edge chip.
2)Large chip removal hole design. Unimpeded chip removal,More Smooth .
3)Diamond sand is made by vacuum sintering of mixture and adhesive.
4)For different electric tool spindle to match the connection, with tri-angle threaded, hexagon threaded, M14, G1 / 2, 5 / 8-11.
5)Vacuum Hole Saw Kit:Accept customized, Freely DIY.