Triple Square Spline Bit Socket Set, 10-Piece M4–M18

Triple square spline bit socket set gives you fast, secure engagement on XZN fasteners for smoother removal and install during automotive and mechanical work. Built from chrome-vanadium alloy steel with a chrome-plated, sandblasted and mirror-polished finish, these spline bit sockets resist corrosion and everyday shop wear. A precision chamfered edge and rounded triangular contact points help the bit seat cleanly while reducing fastener wear.

• Includes 10 XZN sizes: M4, M5, M6, M8, M9, M10, M12, M14, M16, M18 for broad coverage


• Fits 1/4", 3/8" and 1/2" drive tools to match common ratchets and hand drivers


• Delivers easier insertion with chamfered edges and precision-fit dimensions for confident alignment


• Prevents mix-ups with deep, wear-resistant engraved size markings for quick ID in the toolbox


• Stores securely in a drop-resistant case with dedicated slots to reduce loss and shop downtime

Keep the right triple square spline socket close at hand for routine service, drivetrain work, and other jobs that demand a precise XZN fit. This compact set covers multiple drive sizes and common metric points, so you can move from task to task without hunting for missing pieces. The durable finish helps fight rust in humid garages, while clear markings speed up selection when time matters. Grab yours today and streamline your next repair.

• Set size: 10-piece triple square (XZN) bit socket set


• Sizes: M4, M5, M6 (1/4"); M8, M9, M10, M12, M14 (3/8"); M16, M18 (1/2")


• Materials: CRV6150 (bits) + CRV 50BV30 (sockets)


• Hardness: Bits 50–56 HRC; Sockets 38–42 HRC


• Case material/color: PE, black


• Net weight: 1.48 lb / 0.67 kg


• Case dimensions: 8.27 x 4.41 x 1.5 in (210 x 112 x 38 mm)