OpenEnd Interchangeable slot design allows quick adaptation to various bolt and nut shapes, providing flexible solutions for different fastening tasks with an 832mm opening and a 9 x 12 mm insert compatible with general standard sizes Socket Wrench Tool Engineered to fit on 9 x 12 mm heads, this spanner delivers accurate torque transmission to prevent overtightening, protecting both fastener and material integrity during use Torque Built with chrome vanadium steel construction and heattreated for enhanced hardness, offering long lasting performance even under heavyduty applications and frequent usage Spanner Versatile openend configuration enables access to confined or awkward spaces where conventional wrenches cannot reach, improving efficiency and range of motion in complex assemblies Use scenarios Automotive in tight engine bays where bolts vary in shape: swap to the interchangeable slot and use the 832 mm opening to adapt quickly without changing tools Machinery maintenance requiring controlled torque on 9 x 12 mm fasteners to avoid overtightening and damage during repeated servicing Home projects and furniture assembly in confined corners or awkward positions, where the openend design helps reach fasteners that regular wrenches cannot access