Features Wheel for rotary encoder ,aluminum alloy bracket, strong structure, durable in use. The wheel surface is made of thickening rubber, which is anti-deformation and anti-slip. Aluminum silicone encoder wheel meter ,good rigidity, stable operation, easy to use. Can be used for rotary encoders to create wheel encoders. Rubber wheel, wear-resisting, good friction. 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 (Optional) Circumference Hole Diameter EW-002 200mm 6mm EW-011 250mm 6mm EW-003 300mm 8mm Package List: 1* Encoder Meter Wheel Package List