Diameter (mm): 68
Total length (mm): 90/200
Maximum depth (mm): 70/140
Threaded: M16 x 2
Tool shank: Hex
Impact Drilling: no
Drills which have a hexagonal grip are putted on a normal clamping head or on a collet drill chuck. Hexagonal form allows to keep the drill in the chuck in proper alignment, so there is a better energy transfer.