Bit size: ø3/16" to 15/16" (ø5.0mm to 24.0mm)
Overall length: See size table
.Shank size:
Recommended rotation speed: 1,500 to 15,000rpm Double insulated electric drills (in the rotary-only mode)
No.2 For ø1/2" to 15/16"(ø12.5mm to 24.0mm)Shank size 3/8" (10mm)