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.