Complete 40-Piece Professional Toolkit includes ratchet, extension bar, 1/4 inch spinner handle, spark plug socket, adapter, and 40 precision-engineered components for automotive repairs and Diy projects. Socket Size Range covers Sae (5/32 inch-3/4 inch) and Metric (4mm-17mm) sizes across 1/4 inch and 3/8 inch drives, including specialty sockets like spark plug and 8pt. Sae for compatibility with bolts, nuts, and machinery of all sizes. Built to Last Durability: Forged from corrosion-resistant chrome vanadium steel to withstand wear and tear, with rugged blow-molded storage case keeping tools secure, organized, and portable. Ratchet and insulated nut driver handle deliver precision in tight spaces, while heat-treated sockets prevent stripping for reliable, professional-grade performance. Compact, impact-resistant blow-molded case (9.45 inch x 4.72 inch x 1.57 inch) ensures tools stay protected and ready for instant deployment. Weight: 2.14 pounds.