Centaur Precision Tools ER16/R8 Collet Chuck is designed to hold ER16 collets and features an R8 shank. It allows tool changes using the ER16 collet system while mounted in an R8 spindle.
R8 Collet
R8 Collet Sets
ER40 Collet Chuck (R8 Shank)
ER32 Collet Chuck (R8 Shank)