Product name:	Sintered glass drill bits
Type:	thread shank, straight shank, cone shank
Feature:	fast drilling speed ,high efficiency and less chipping,  best diamond material ,can be customized
Usage:	Mainly used for glass cutting
size:	diameter:5-100mm length: thread shank: 75mm, 95mm;  cone shank: 60mm,65mm shank: 8mm, 10mm