High-density plastic with anti-slip steel bar. Prevents a maximum 30 Tonne vehicles movement when being jacked on a level surface or parked on an incline not exceeding 12°. Steel chock bracket designed to mount to wall or trailer. Features & Benefits:High-density plastic with anti-slip steel bar.Prevents a maximum 30 Tonne vehicles movement when being jacked on a level surface or parked on an incline not exceeding 12°.Steel chock bracket designed to mount to wall or trailer.Chock Dimensions (W x D x H): 200 x 475 x 225mm.Chock Weight: 1.7kg.Bracket Weight: 1.36kg.Model No. CV127 Specifications: Model No CV127 Brand: Sealey Dimensions (W x D x H): 200 x 475 x 225mm Material: Composite Nett Weight: 3.15kg Weight Each: 1.7kg