Features and Benefits: INSIDER Box Ratchet Sockets are exclusively compatible with the M12 FUEL INSIDER Box Ratchet; INSIDER Box Ratchet Sockets deliver Unrivaled Access in tight spaces; Laser etched part number; Box Ratchet sockets chamfered end allow quicker and more effiecient insertion and removal; Dual-sided laser etching for easy size identification; Non-slip hex geometry to prevent stripping and fastener rounding; 6-Point design; Meets ASME Industry Standards; Box Ratchet Sockets are backed by our Lifetime Guarantee;