High-duty Aluminum Alloy Construction: built with a high-strength aluminum alloy, this wheel chock weighs less than steel yet offers greater strength than plastic; The material resists rust and corrosion, holding up in outdoor and wet environments; At 12.3 x 6.4 x 7 Inch, this portable wheel chock fits easily into truck toolboxes or vehicle storage compartments—ideal for drivers or service crews to carry along Anti-slip Teeth Base for Grip: the bottom features a rugged teeth design that increases friction on concrete, asphalt, or gravel; This anti-slip wheel chock stays in place during parking, helping prevent unwanted vehicle movement even on uneven surfaces Ramped Shape for a Secure Tire Fit: the sloped profile follows the contour of the tire, providing stable support to help prevent forward or backward rolling; Whether used as a trailer tire wheel chock or for other vehicles, the angled design improves parking safety through consistent contact Built for Heavy-duty Trucks and Rvs: engineered for large vehicles, this wheel chock handles the weight of semi-trucks, construction equipment, and recreational vehicles; It serves well as an RV semi truck garage tire chock, delivering reliable roll resistance in demanding conditions Extra Stability Across Work Environments: from loading docks and warehouse parking to construction sites and repair shops, this wheel chock provides extra stability during parking and maintenance; It adds a layer of safety whether you are securing a vehicle for routine stops or service work ASIN B0GTRLCR8L Brand Outus Model JUI2318 Item Weight 5.51 pounds Manufacturer Outus Item model number JUI-Outus-2318 Product Dimensions 13.78 x 7.48 x 7.48 inches Manufacturer Part Number JUI-Outus-2318