This 900mm Aluminium Sash Clamp Vc63 is an ideal addition to anyone's tools , whether it be for the garden , garage or DIY Aluminium Sash Clamp 900mm Made from U section, extruded aluminium with cast head and foot Spring-loaded rapid adjustment mechanism sets foot to correct position on bar Deep-cut Acme thread enables final tightening and application of clamping pressure Warranty: LIFETIME for all hand tools ; 3 YEAR for power tools , air & petrol tools. Silverline-Tooltime VC63 5024763016301 .