Features Aluminum alloy bracket, strong structure, durable in use. Can be used for rotary encoders to create wheel encoders. The wheel surface is made of thickening rubber, which is anti-deformation and anti-slip. Rubber wheel, wear-resisting, good friction. Good rigidity, stable operation, easy to use. Features: The wheel surface is made of thickening rubber, which is anti-deformation and anti-slip.Aluminum alloy bracket, strong structure, durable in use.Good rigidity, stable operation, easy to use.Rubber wheel, wear-resisting, good friction.Can be used for rotary encoders to create wheel encoders. Specification: Material: rubber, aluminum alloy Model: EW-014 Circumference: 250mm Hole diameter: 8mm Package List: 1* Encoder Meter Wheel Package List