This 18" stained and sealed solid wood tire thumper lets you know if your tires are fully pressurized by making a thump as it hits the rubber. Just swing the thumper and listen for the sound. If your tires are low in pressure it makes a different sound. Features a weighted end with metal bolt and a nylon cord for hanging. Complies with CPSIA, Prop 65. 18.5" L x 1.25" Diameter
