These tweezer style clamps are designed to be either light in pressure or powerful and precise, you get to decide by adjusting the sliding ring to increase the pressure level. The vinyl coated ends allow a level of comfort and safety, you will love the tantilizing feel of this great vice, clamps are 3″(7.6cm) long, chain is 12″(30.5cm) long, total length is 18″(45.7cm), Black