zinc alloy handle adjustable tightening handle pass ISO9001;2000 quality certificate ,and has good reputation with good price zinc alloy handle dd1IRhHDM5516,20,25,32,404083415M6616,20,25,32,404083415M8820,25,32,40,5063104518M101020,25,32,40,5080125822M121225,32,40,50,6395156625M161640,50,63114187832