6.35 mm to 4 mm Adapter Converts between 6.35 mm (1/4 inch) drive and 4 mm hex bits to enable seamless use of 4 mm hex accessories with standard drivers. Material and build: Steel construction with a precision machined hex shank for a secure fit and reduced slippage during use. Key benefits: Enhances efficiency and versatility by enabling 4 mm hex bit applications with common 1/4 inch drive tools. Applications: Suitable for home maintenance, furniture assembly, automotive repairs, and various engineering projects; a reliable addition to any multifunction tool collection. Design and portability: Lightweight and compact for easy transport and storage; a practical addition to any toolbox for on the go tasks. Technical specs and compatibility: Shank type is hex; drive size 6.35 mm (1/4 inch) to 4 mm; material steel; performance features secure fit and minimal slip. Use scenarios: Assembling flatpack furniture that uses 4 mm hex fasteners with a 1/4 inch drive driver. Automotive repairs in tight or restricted spaces where 4 mm hex bolts are involved. Maintenance of machinery or equipment with 4 mm hex screws in confined areas.