The TraXion Topside Knee Step provides a padded platform for standing or kneeling while working at engine height. Designed to attach securely to compatible TraXion Topside Creepers, it provides a stable surface that helps reduce knee and leg fatigue during extended under-hood work. The accessory is compatible with the TraXion 3-100, 3-106, 3-107, 3-109, 3-200, and 3-900 Topside Creepers. It is not recommended for use with the TraXion 3-700 ProGear Topside Creeper.