Thread Size: 1/4"-20
Type: left-hand thread
Cutting material: HSS
A tap is a drill for creating an internal thread in metal, plastic or other solid materials. The tap only cuts the thread. The actual core hole must first be pre-drilled with an ordinary twist drill.
Putting, fast replaceable SDS Plus drills for pneumatic rotary hammers have a 10 mm diameter of a shank and have 4 oval-shaped grooves, from which on one side there are 2 closed and 2 open grooves. In order to calculate from the total length of a drill its pararell length, one has to substract 60 mm from the total length. This is the length at which the drill is putted on the hammer.