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 Size 24" = DIN 3117 Form B, jaw set at 22,5° 
 Swedish pattern, roller with left hand thread 
 No. 60 P with scale 
 Sizes 6" - 12" made from GEDORE vanadium steel 31CrV3 
 Sizes 15" - 24" made from heat-treated steel EN 10083 
 Phosphate finish, polished heads