Replaces special tool: # 07716-0020100, 07VMA-MBB0100-101; Removes Locknut: 90231-028-000, 90231-200-010 Fitment:CRF50, XR200 1980-1984, XR200R 1981-1994, XR250L 1991-1994, XR250R 1986-1994, CL, CT, S, L, XL, SL models, Z50, XR50, ATC70, ATC90, C70, CL70, CRF70, CT70, SL70, TRX70, XL70, XR70, TRX90; 50cc, 70cc, 90cc, 90cc, 110cc, 125cc ATV, dirt bike, go kart; Fits most Chinese brands such as Baja, BMS, BMX, Buyang, Coolsport, Coolster, Hensim, JCL, Jetmoto, Jonway, Kazuma, Kinroad, Lance, NST, Peace, Roketa, SSR, Supermach, TaoTao The clutch lock nut spanner is made of solid steel material, sturdy construction, durable in using SIZE: 0.90inch (24mm) inside diameter on one side(1.2-inch / 30mm OD); 0.8-inch (20mm) on another side (1-inch / 25mm OD) Detsils: Replace special tool: # 07716-0020100, 07vma-mbb0100-101; Removes locknut: 90231-0231-028-000, 90231-200-010. Fits Models: CRF50 XR200 1980-1984 XR200R 1981-1994 XR250L 1991-1994 XR250R 1986-1994 CRF50 Z50 XR50