Set consists of one installing pot, one pot spacer, one bolt with nut and 11 different size adapters.
All adapters are made from CrMo steel.
Except for one M12 x 1.25, all adapters have right hand threads. 
Sizes as follows :
M7 x 1.0, M10 x 1.25, M12 x 1.25L, M12 x 1.0, M12 x 1.25, M14 x 1.0, M16 x 1.0, M18 x 1.0, M14 x 1.5, M10 x 1.25, M22 x 1.0(for Yamaha YFM200/250/350/400 ATV)