1. havae a wide range of diameter choice 2.OEM, ODM available drill bit Used for glass cutting. High quality, long service time, can drill more than 2000 holes. SharpDWXTMA*90A5- 20018, 1075, 95As specifiedAs specified *91A 15 25 35 45 55 65 *92A 5-5018, 10 MA= mounting dimensions Other dimensions available according to your request. high quality drill bit