1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm, 5.5 mm, 6.0 mm, 6.5 mm, 7.0 mm, 7.5 mm, 8.0 mm
*NOTE: Sherline's WW collet adapter does not have a keyway
pin for the collets. The customers have been using their WW collets on their lathes without a key pin for over forty years without any problems.