Cam clutches for back stopping, overunning and indexing.

Models:

TL200-1, TL200-2, TL250-1, TL250-2, TL350-1, TL350-2, TL500-1, TL500-2, MZ15, MZ17, MZ20, MZ30, MZ45, MZ60, MZ-G, PB, B203, LD, BB, MG, MI, MX, MI-S, BS30, BS50, BS65, BR, TSB, TT-1X