Chain holds and locks around any shape or size perfect for awkward pieces Turn screw adjusts pressure to fit work and stays adjusted for repetitive use Constructed of high-grade heat-treated alloy steel for durability Classic trigger release designed to provide maximum locking force The Locking Chain Clamp is perfect for clamping irregularly shaped objects up to 18 inch in circumference. Constructed of high-grade heat-treated alloy steel for durability, it features the classic trigger release for maximum locking force and turn screw adjustment to fit work and stay adjusted for repetitive use. Color: black + silver material: metal Package Contents: 1 * Chain Vise Clamp Plier Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.