SUPERKROME: SK’s high polish finish protects the sockets from harsh working environments while providing long life and maximum corrosion resistance SECURE HOLD: The ball detent of the drive securely holds the socket to the coupler allowing you to work with confidence. USE WITH EASE: The diamond knurled handle sleeves provide easy attachment and removal of sockets even with oily hands. BUILT TO LAST: SK Tools USA, LLC was founded in the early 1900s. To this day, we remain driven to manufacture quality tools for the American technician. MADE IN USA: This SK product is proudly Made in the USA. Today, SK Tools USA, LLC manufactures over 3000 products and continues our commitment to providing quality innovation to the toughest professionals in the world.