Barrier Group Urethane Wheel Chocks Size:Small: 20 x 17 x 15cm You can also adjust them You can also adjust them by detaching them or shifting them from one side to another Weight Per Pair (kg) Horizontal Centre Of Gravity (mm) WLL (kg) at 600mm Load Centre Heavy Duty DHE CL2 1500 1500 900 130X50 53 700 4000 DHE CL2 1600 1600 960 130X50 56 748 4000 DHE CL2 1783 1783 1068 130X50 63 840 4000 DHE CL2 2000 2000 1200 130X50 70 950 4000 DHE CL2 2100 2100 1260 130X50 74 997 4000 DHE CL2 2400 2400 1440 130X50 85 1145 4000 Important note Stop your vehicle rolling away Barrier Group Urethane Wheel Chocks prevent stationary vehicles from shifting or moving when they are not in use