VEVOR 72'' Rubber Speed Bump, Dual Channel, Supports up to 22000 lbs, Durable Traffic Speed Hump with Bright Yellow Reflective Strip, Includes 4 Expansion Screws & Drill for Asphalt, Concrete, GravThe speed bumps for gravel roads adopt a dual-channel design with a channel size of 1.18 x 0.79 in / 3 x 2 cm. 1.77 in product height, making it easier for vehicles to slow down.The asphalt speed bumps can hold up to 22,000 lbs per axle, so your vehicles can pass through without stress.Rubber speed bumps are crafted from high-quality rubber, with less odor, excellent wear resistance, and high impact resistance, which is not easy to damage.The anti-slip texture surface on the rubber speed bump increases friction, making it easy to pass over bumps without sliding.High reflective bead design provides greater visibility, and the bottom structure enhances the supporting force.You can place one or more temporary speed bumps as needed in parking lots, communities, highways, roads, schools, construction sites, and hospitals to control traffic flow.Operating Temperature: Above -40℉ / -40℃,Gross Weight: 59.52 lbs / 27 kg,Packing Size(L x W x H): 72.83 x 12.6 x 2.36 in / 185 x 32 x 6 cm,Amount: 1 PC,Channel: 2,Channel Size(W x H): 1.18 x 0.79 in / 3 x 2 cm,Color: Black + Yellow,Model: RS1830A-1,Maximum Load Capacity: 22000 lbs / 10000 kg(per axle),Product Dimensions(L x W x H): 72.05 x 11.81 x 1.77 in / 183 x 30 x 4.5 cm,Net Weight: 55.12 lbs / 25 kg,Main Material: Rubber