- Rubber construction: these rubber underlay wedges provide slip resistance and durability, designed as underlay wedges for trailers and boat accessories. - Triangular stability: the triangular design increases stability and prevents vehicle movement; effective as rubber tyre wedges and underlay wedges for caravan trailers. - Sturdy triangular design: the triangular shape helps prevent vehicles from slipping or rolling; functions as a car wheel stopper. - Ramp friendly: the inclined design makes it easier for vehicles to navigate ramps and minimizes the risk of wheels slipping on ramps or when using lifts. Use scenarios - Secure a boat on a trailer when loading or unloading on uneven ground or slopes to prevent shifting. - Stabilize a caravan or trailer on driveways, campsites, or other uneven surfaces to stop rolling or movement. - Provide stable support during ramp access or lifting operations to reduce wheel slip and improve control.