You can expect controlled lowering every time with this Sealey Vertical Transmission Jack The 1000TR 1-tonne vertical transmission jack from Sealey features a two-way hydraulic unit that ensures that the saddle lowers at a controlled speed at all times, even without load. It is extremely durable and can be used for workshop or professional use. The saddle height goes from 1120-1950mm. Features: Extra-large castors allow for increased manoeuvrability Can be fitted with Model No. ADT5 - Adjustable Gearbox Support Hydraulic unit larger than the economy models for improved performance and durability Spring-loaded dead man\'s safety release control reduces the risk of inadvertent lowering A two-way hydraulic unit ensures that the saddle lowers at a controlled speed at all times, even without load 1-tonne model manufactured to exacting standards, strong construction for durability and suitable for general workshop applications Specification:  Capacity: 1000kg  Ram Extensions: 1  Base Size: 610 x 680mm  Fixed/Adjustable Saddle: Fixed  Minimum Saddle Height: 1120mm  Maximum Saddle Height: 1950mm  Optional Adjustable Gearbox Support: ADT5