Versatile 12 Point Screwdriver Bit: Compatible with 1/2 inch drive and ratchet wrenches. This 3 inch adapter features a 12 point head design for enhanced grip and torque on M5 to M19 fasteners during automotive repairs and DIY projects. Socket Adapter Set: This single piece 1/2 inch drive socket adapter includes multiple size options from M5 to M19, crafted from MO material for lasting performance in mechanical , woodworking, and maintenance applications. Lasting MO Construction: Made from chrome steel, this 12 point screwdriver bit maintains integrity under torque situations, offering reliable performance for professional mechanics and workshop use. Engineering: With exact 12.7 mm drive size and 78 mm length, this socket wrench adapter provides secure fit and leverage, avoiding slippage while working on automotive parts, machinery, and carpentry projects. Use scenarios Automotive repairs and engine bay work: fasten or remove M5–M19 bolts with improved grip and torque in tight spaces, using the 12 point head and 78 mm reach. Mechanical , maintenance, and workshop projects: reliable performance under torque in professional or DIY settings. Woodworking and carpentry projects: suitable for assembly tasks that involve M5–M19 screws, offering secure fit with compatible tools.