This is a set of four optional Core-RC 4mm Aluminum Serrated Wheel Nuts,
and are intended for use with the Schumacher Cat SX2 and Cougar SV 1/10
electric buggies as well as any application that requires a 4mm nut.
These attractive wheel nuts feature a serrated face that locks securely
onto the face of the plastic wheel, reducing the risk of loosing your
wheel nuts and no nylon insert to wear out.