Can be used with most types of furniture. It can accommodate castors, legs, solid divan bases and modern block feet, by using the included adhesive pad adaptors. Each Langham SureGrip features a unique double grip The unit twists to give a variable height range which is shown on the side of the product: Approx. 1.5 to 4 inches (3.8 - 10 cm), for furniture with legs up to 2 ¾ inches thick (7 cm) Approx. 3 to 5.5 inches (7.5 - 13.8 cm), for furniture with castors Approx. 4 to 6.5 inches (10 - 16.3 cm), for furniture with block feet or a solid base. The Langham SureGrip can be used independently or linked together using the linking arms (sold seperately) to create a stable linked raise using additional link arms and spreader bars. Max. Weight Limit: 700kg / 110 stone / 1540lbs (including furniture) Product Weight: 1.5 kg Shipping Weight: 2 kg