Description Featuring a high-precision bearing roller wheel for tube track, this round rail slider wheel ensures smooth and quiet seat movement on gym equipment, especially rowing machines. The non-slip ab wheel and ergonomic kneeling pad moving wheel design offer superior user comfort and durability. ideal for home and fitness gyms, it fulfills needs for effortless cleaning and safe exercise. Features -Color:Multi -Material:Plastic + Carbon Steel -Size:3.40X3.00X3.00cm/1.34X1.18X1.18in -Smooth rail movement: the round tube track roller features highprecision bearings that provide a silent and smooth sliding rail guide wheel experience, ideal for rowing machine seat cushion guide wheel use -Durable material selection: crafted with strong plastic u groove pulley, this ab wheel replacement ensures longevity and reduces the need for frequent machine replacement wheel swaps -Enhanced safety design: the innovative limit stop wheel mechanism offers reliable limits, preventing the roller wheel for tube track from derailing, making your gym equipment replacement wheels secure -Versatile scene compatibility: this furniture slider wheel adapts seamlessly to home gyms or professional fitness centers, working as heavy duty guide wheel and mobile cushion roller for diverse equipment needs -Effortless installation & care: simple to install or remove, this sliding gate guide roller makes cleaning and maintenance easy, so your abs roller wheel and conduit rail guide wheel stay in top conditionPackage list: 1 x fitness equipment pulley