T-spring throat collar

Big American clamp 27-51

Disc spring torque compensation throat hoop 25-45

American torque compensation throat hoop 29-40

Single ear endless clamp (small)

Single ear endless clamp (small)

American torque compensation throat hoop 48-59

German type clamp 25-40

Mini Throat Hoop (Large)

German style Flat headband compensation piece (large)