Tube clamp is molded of strong, durable plastic with serrated jaws 2.7cm (1-1/16") long. Attach at any point on tubing without disconnecting tubing. Operate with one hand; locks closed and opens when the locking tab is released. Fits tubing up to 1.3cm (1/2") O.D.; wall thickness of 0.82mm (1/32") or thinner. Circular opening (approximately 0.6cm (1/4") diameter) at hinge end allows clamp to remain attached to tubing having 0.6 - 1.0cm (1/4 - 3/8") OD with little to no restriction in flow when not in use. Overall length is 5.9cm (2-5/16"). Autoclavable.