Dremel Glass Drilling Bit (662) M4301 It has a 1/4 inch

It has a 1/4 inch hex shank for use with drills

Diameter 135 mm Height 10

Wood: 30mm No load speed / Impact per min 0 - 3

Just set your desired pressure by turning the thumbscrew for more or less pressure

Festool Y-piece D 50 SV-AS/D 50 V 452898 for D50/D36/D27 Hoses

Dremel Glass Drilling Bit (662) M4301 It has a 1/4 inchThe Dremel Glass Drilling Bit (662) is a diamond impregnated core style bit that offers superior long life. It is perfect for drilling holes in glass surfaces. Diamond impregnated core style bit Superior long life Perfect for drilling holes in glass surfaces Technical Data Shank diameter 3,2 mm Working diameter 3,2 mm Working length 5 mm Accessory length 44,0 mm Width 3,0 mm Length 3,0 mm Height 45,0 mm Includes 1x Dremel Glass Drilling Bit (662)