BLUE POINT CHN 430 10″ CHANNELOCK SLIP-JOINT PLIERS USA! Grind Marks Torn Grips. The previous owner used grind marks to ID their tools. It can be seen on both sides of this Blue-Point slip-joint plier. See photos. The jaws are in excellent condition, and the grips are in poor condition with large cuts and some stains! Review all photos to assess the quality of this Blue-Point slip-joint plier!