Stanley trigger clamps stanley 0 83 004 stanley trigger clamp quickly converts from a clamp to a spreader it has a removable bar design which integrates longer or shorter bars and the reinforced nylon and steel construction provides strength and durabilitythe removable jaw pads protect surfaces from marking and damage and the dual pivot trigger offers fast closing and a high clamping force of up to 90kglarge trigger clampclamping capacity 150mm 6inspreading capacity 390mm 15in stanley