Made of heat-treated steelMachined to fit 0.725'' OD seal and 0.565'' valve guideCounter-bored to allow for greater retainer-to-seal clearanceMade in the USA
https://shopping.truda.io/product/lower-collars
Made of heat-treated steelMachined to fit 0.725'' OD seal and 0.565'' valve guideCounter-bored to allow for greater retainer-to-seal clearanceMade in