CYL 1" RD/ER 20 Collet Chuck.134 MM Shank Length. Hex Nut
ER8 Straight-Shank Collet Chuck (Extension)
Straight-Shank ER20 Collet Chuck (Extension) | 1 in.
Straight-Shank ER20 Collet Chuck (Extension) | 20mm.
ER11 Straight-Shank Collet Chuck (Extension)
Straight-Shank ER16 Collet Chuck (Extension) | 3/4 in.