... 3.Grade:G100 4.1/2",3/4" 1,1/4' 1,1/2' 1/2",3/4" 1,1/4' 1,1/2' Thread ... :GB308-20026)Feature: wear-resisting, excellent surface quality and high hardness.7)Using:1. General industry for automobile ... appliance bearings 3. High - speed, low noise special bearing 4. Ball valves for liquid and gas ect 4.Enjoy more of ... the steel ball product images: 1/2",3/4" 1,1/4' 1,1/2' Thread ...