DYNOMEC locking wheel nut remover. Made in SheffieldAs used by the AA, recovery services, garages and tyre shops. Patent Pending removes most types of wheel lock nuts and rounded wheel nuts.Detailed instructions on tool usage and lock nut types are included with the set. A and B, D blades are made from S1 steelC blade for McGard style nuts. Please help us with leaving a postive feedback as a valued customer to help other customers.