stainless steel; piston of booster assembly
Aluminum
ZZQ01A outer male thread 1-3/16x24 , female thread 1/2-28
ZZQ01B outer male thread 1-3/16x24 , female thread 5/8-24
ZZQ01C outer male thread 1-3/16x24 , female thread 9/16X24
ZZQ01D outer male thread 1-3/16x24 , female thread .578×28
ZZQ02A outer male thread 1-3/16x24 , female thread 1/2-28
ZZQ02C outer male thread 1-3/16x24 , female thread 9/16X24
ZZQ02D outer male thread 1-3/16x24 , female thread .578×28
Scope of supply
1 x booster