DUO Compliant Wheels are used for intakes and conveyor systems. Featuring a solid 5mm Hex Hub molded into the wheel making sure more power is driven by the wheel, combined with the “hurricane” cutouts to ensure even compliance across the rotation of the wheel. These wheels come in two different durometers, Soft - Light Gray 30A and Medium - Gray 40A. As the tread durometer increases the compliant wheel gets harder which will change traction, wear, and compliance of the wheel. Specifications Diameter: 2in (50.8mm) Width: 0.5in (12.7mm) Hub Material: Polypropylene Hub Bore: 5mm Hex Tread Material: Thermoplastic Rubber Tread Durometer: Varies (see table below) Weight (single wheel): 0.64oz (18.1g) RPM Rating: 5,500 RPM HARDNESS COLOR DUROMETER Medium like a pencil eraser Gray 40A Soft like a rubber band Light Gray 30A Documentation DUO Build System DUO Wheel Basics CAD & Drawings DUO Compliant Wheel STEP Files DUO Compliant Wheel Drawing