Hastings Piston Ring Set - 4.005 1.2 1.2 3.0mm CTEK 8 AN Male to 7/8-20

8 AN Male to 7/8-20 in Male O-Ring Seal

these Hi-Tech polylocks are designed for 3/8" Ultra Pro Magnum and Ultra Pro Magnum XD rockers

Each style is specially designed for a perfect and custom fit and each style has it's own durometer

Carb to EFI pressures

Multi Foam Density Interior with Contoured Cheek Pads for Secure Fit

Hastings Piston Ring Set - 4.005 1.2 1.2 3.0mm CTEK 8 AN Male to 7/8-20Product Description: Piston Rings Premium Ductile and Steel Series 4. 000 in Bore File Fit 1. 2 x 1. 2 x 3. 0 mm Thick Standard Tension Stainless Steel Gas Nitride 8 Cylinder For nearly 100 years, Hastings has earned its reputation as a leader in piston ring technology.