The Motion Pro Spanner Nut Socket is designed for the removal and installation of spanner (castle) lock nuts and serves as a direct equivalent to Suzuki tool 09940-14940. Built from heat-treated high-carbon steel and finished with a durable black oxide coating, this tool provides strength, longevity, and precise fitment for secure servicing.Features Designed for 4-pin spanner (castle) lock nuts Constructed from premium high-carbon steel Heat-treated for enhanced durability and strength Black oxide finish for corrosion resistance Compatible with 1/2-inch drive tools Laser-etched with Motion Pro logo and part number Specifications Outer Diameter: 43.2mm Inner Diameter: 33.15mm Pin Width: 5.25mm Number of Pins: 4 Drive Size: 1/2 inch Cross-Reference OEM Part Numbers Suzuki 09940-14940 08-0575