The sleeve is elastic. It clamps the tool via elastic fastening.
The sleeve is designed with a groove for the orienting hatch of the tool in the tool holders TD/10300/40 and TD/10300/41. This sliding hatch adjusts the angular position of the tool.
The sleeve also permits the use of drilling tools. For this purpose, the sleeve is designed with a sideways threaded hole for the sideways screw of the tool holders TD/10300/40 and TD/10300/41 which allows the angular positioning for turning with the drilling tool.