Works in cases of corrosion, rounded lug heads, thin walls for specialty aluminum wheels, etc.Works on at least 6 different fastener types: Spline, 6 Point, 12 Point, Star, Square and 50% rounded off headsManufactured using quality chrome molybdenum alloy steel for high-torque and durabilityColor coded protective sleeves for easy identification which helps to prevent damage to custom wheelsImpact ratedCase included