SIP 03845 Gantry Crane Chain Block 2.5m, 1 Tonne Capacity The SIP 1 TONNE Gantry Crane Chain Block is a heavy-duty assembly designed to work alongside the SIP 1 TONNE Mobile Gantry Crane Frame and SIP Beam Trolley to provide a complete lifting and support solution in garages and workshops. This chain block assembly is suitable for a variety of professional-grade manual lifting demands, utilising a robust mechanism with hardened shaft and gears to provide minimal resistance and low operator effort. It is perfect for use in a wide variety of garage and workshop applications including automotive maintenance and repair, servicing, material handling and manufacturing. 1 TONNE safe workload for versatile performance. ⌀ 40mm hook capacity and ⌀ 6mm load chain. Heavy-duty chain block assembly with manual lift. Low resistance system for added user ease-of-use. Robust mechanism with hardened shaft and gears. Short headroom for quick and easy installation. Reduced maintenance and servicing costs.