Punch Clamps are double wrapped and formed to a given diameter, with sizes ranging from 3/4" to 8" I.D. All of these clamps can be pulled down to a smaller diameter using a punch clamp tool but...
?ò SG Cast Iron clamps with Spheroidal Graphite structure produces 60,000 PSI tensile strength ?û twice the tensile strength of ductile iron clamps! ?ò Guaranteed unbreakable in normal use ?ò...