Description: 【Material】Pulley Wheel Bearing Wheel is made of nylon, metal, lightweight and sturdy structure 【Single 6000 Bearing】Equipped with a deep groove ball bearing (model 6000). Capable of handling both radial loads and minor axial loads, ensuring smooth rotation and durability during high speed use 【Tension Control】Acts as an idler pulley in belt driven systems, adjusting position to maintain optimal belt tension, prevent slippage or derailment. 【Low Noise】Bearing Wheel ideal for fitness equipment requiring reduced friction noise (e.g., household treadmills, elliptical machines), while lowering overall weight 【Application】Suitable for Treadmills, used in the belt driven system between the drive motor and running belt. Suitable for Elliptical Machines, which assists in power transmission within flywheel or resistance systems, ensuring stability during resistance adjustments Package Includes: 1 Bearing Wheel Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.