The assist arm is a must have for mounting and dismounting low profile and run flat tyres and is for use in conjunction with Model No. TC10 Tyre Changer. Operated by air supply from tyre changer. Single air ram operates three separate arms with one control lever. See Sealey website for demonstration video. Features & Benefits:The assist arm is a must have for mounting and dismounting low profile and run flat tyres.For use in conjunction with Model No. TC10 Tyre Changer.Operated by air supply from tyre changer.Single air ram operates three separate arms with one control lever.See Sealey website for demonstration video.This item is heavy. Extra assistance must be provided at the delivery point to help its safe delivery.Model No. TC10A Specifications: Model No TC10A Brand: Sealey Height: 1220mm Mounted Height: 1550mm Nett Weight: 70kg Operating Pressure: 8-10bar(115-145psi)