The Tillotson rebuild kit is for the HX-10A and the HX-12A includes
Diaphragm
All gaskets
Membrane
Metering lever
Needle valve
Needle seat
Subtotal: $20.55
The Tillotson rebuild kit is for the HX-10A and the HX-12A includes
Diaphragm
All gaskets
Membrane
Metering lever
Needle valve
Needle seat