This Motion Pro Spanner Nut Socket is designed for the removal and installation of spanner (castle) lock nuts, serving as a functional equivalent to Suzuki tools 09940-14980 and 09940-14990. Engineered for professional-grade durability, the tool features a dual-end design and is constructed from heat-treated high-carbon steel for long-term reliability.Features Dual-end socket design for increased versatility Constructed from high-carbon steel for strength and durability Heat-treated for enhanced wear resistance Hot black oxide finish for corrosion protection Compatible with 3/8-inch drive tools Laser-etched with Motion Pro logo and part number Specifications Large End: 34.2mm OD, 26.5mm ID, 5.6mm pin width (4-pin) Small End: 19.8mm OD, 14mm ID, 3.6mm pin width (4-pin) Drive Size: 3/8 inch Cross-Reference OEM Part Numbers Suzuki 09940-14980 Suzuki 09940-14990 08-0568