27pcs Drive Impact Socket Sets Shallow Socket Assortment Metric 21mm to 65mmDescription Unique 6 point socket design enlarges contact surface between sockets and fasteners, locks force more firmly, reduces wear and prevents rounding off at corners. Constructed from high quality steel to ensure extra durability throughout multiple applications and ideal for large. industrial trucks and farming tractors. Used with home, car repair or other mechanical equipment; Each socket has a laser etched markings, Easy to use and quickly