Supplied with :
ER clamping nut (internal).

Optional extras :
ER collets No. 308881 − 309434, pull studs (PS) No. 308760 − 308802, PS wrenches No. 308820 – 308835.

Application :
For clamping tools with parallel shank in collets to DIN 6499 − Form A and B.

Note :
Matching clamping nut No. 309621.

Version :
Taper ground internally and externally. Ultra-short type with internal precision clamping nut. Best suited to working in restricted working areas, with higher stability.