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wheel chock Find what you want at the price you want!1. Guaranteed Security:1 )The vehicles are immobilised without the use of man power. 2) Solidly set in place; the chocks can withstand the force of a truck at full power 3) Chocks are completely safe. 4) Is able to lock any type of vehicle and securely hold it in more than one position.2. An Easy-to-Use Product:1) Chocks are activated by way of a simple control panel. 2) No tools are needed to dismantle the chocks. 3) There are no engines, no lubricating devices, no gears, and no chains. 4.) Material: carbon steel, stainless steel, 316 steel,301 steel etc. 5.) All kinds of size can be available 6.) Export wheel chock to Europe from2002 to 2010 Shaanxi Allstate Tech&Trade Co.Ltd ------------------------------------------------------------------------------------------------------------------------------------ Tel: 86-29-88455958 Fax: 86-29-88451053