This Centaur Precision Tools ER40/R8 Collet Chuck is designed to hold ER16 Collets and has an R8 Shank. Allows the user to change tools without removing the chuck from the spindle.
Straight-Shank ER20 Collet Chuck (Extension) (Hex) | 1 in.
RDF / AF75 Collet Chuck (V-Flange/CAT40 Taper)
ER11 Collet Floating Reamer Holder (Hex Nut) | 5/8 in.
Straight-Shank ER20 Collet Chuck (Extension) | 1 in.
ER20 Collet Chuck (V-Flange/Taper) | Extended Length