2Pcs Stair Climbing Wheels make transporting heavy loads up and down stairs simpler and safer. These foldable, rotatable caster wheels use a triangular wheel cluster that rolls smoothly over steps while keeping your trolley or cart stable. Key benefits Effortless stair climbing: Triangular wheel arrangement rotates and climbs steps to reduce the force needed when moving loads up or down stairs. Heavy duty construction: Made from PP, EVA and iron for strength and long service life when fitted to shopping bag trolleys or carts. Improved stability and safety: Antislip surfaces and a secure triangular frame help prevent slipping and tipping on uneven surfaces. Easy replacement: Designed to worn or damaged wheels on a wide range of shopping trolleys, utility carts and carriers. Specifications Color: Black Material: PP, EVA and Iron Overall size: Stair climbing wheel assembly about 21 cm / 8.27 inch Single wheel diameter: about 9.5 cm / 3.74 inch Package includes: 2 pieces stair climbing wheels Practical uses Grocery shopping: Attach to a shopping trolley to move bags up building steps, stoops or short staircases with less effort. Home moves: Fit to laundry baskets, small appliance carts or supply trolleys to move items between floors without heavy lifting. Delivery and service: worn caster wheels on delivery carts or maintenance trolleys to maintain reliable stair performance. Note Manual measurement may produce slight size variations. Color may vary slightly due to different screen displays.