... 1/2,1/4,3/8,7/8,5/4.13/8,1/2S,5/8, etc..Type: hoop, wall install, through, leaky, hook, rubber ring, 1/2,1/4 ... ,3/8,7/8,5/4 ... .13/8,1/2S,5/8, etc TypeΦDia (mm)1/2”16-177/8 ... unicom,China telecom, etc.Sales:$20 million /year 1/2, 1/4,3/8,7/8,5/4.13/8,1/2S,5/8 feeder clamp ,