1)Material:PU 2)Foam layer 11mm 3)Holes:8+1holes 4)Thread:5/16"-24UNF 5)Face:velcro Tough and durable fiber glass insert and PU foam.This type pad need high technology..Strongest center thread structure.Different foam layer densities allow you to choose precisely.Excellent resistance to tearing and other damage.5/16"-24UNFFoam layer 11mm8+6+1holes5/16"-24UNF velcro velcro DA backing pads
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