Overview Reviews Product Description This Irwin Vise-Grip® extension chain includes 5 screws to replace damaged or worn-out pieces on your existing Vise-Grip® locking tools.The vise parts work with 20r locking chain clamps. Irwin Tools Catalog Product Videos Custom Field Manufacturing country TW Product Reviews Write a Review Write a Review × Irwin 18" Vise-Grip® Locking Chain Clamp Extension Chain 40EXT Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *