Product Details & Features:Size is marked both with a high-visibility laser marking and a permanent stamped marking that won’t wear off6-lobed tips are machined to precise tolerances for an exact fit with Torx fastenersTwo-piece design allows bit and socket to be optimized separately, for a more durable tool than traditional one-piece designsStorage rail’s patented twist-to-lock design securely holds sockets on the railKeyhole slot allows rail to be mounted to wall or workbench Check out our eBay Shop for a complete selection of great tools!