Package Included: After purchase, you will receive 1 rear foot brake switch harness, 1 5.9 " spring. The thread size is M12 x 1.5, the thread diameter is 0.47 "/12 mm, and the pitch is 1.5 mm. Suitable for Honda, Kawasaki, Suzuki, Yamaha, Norton BSA Harley Aprillia and many other bikes. Easy to Use: This product is designed with an ultra-small but effective spring, you can cut the brake spring to the appropriate size to meet your usage needs. Suitable for most drum brake systems. Universal Fitting: This taillight switch cable is suitable for most motorcycles, from classic bikes to superbikes, motocross bikes, mopeds, scooters, off-road motorcycles, ATVs, karts, motocross bikes, racing or superbikes. Working Principle: When this switch is in the normal resting position, the contacts are open and the circuit is in the "off" state. Pulling the switch through the metal spring hole closes the contacts and the circuit is in the "on" state. Application: This rear brake stop switch fits most bicycles that use a two-wire system and a switch that snaps into the frame. It can directly replace most brake pedal switches, with precise fit and no complicated modification required. Shakas 1 PC Motorcycle Rear Foot Brake Light Switch Harness, M12 x 1.5 14.9 " Tail Light Switch Cable with 5.9 " Spring, Drum Brake System Accessories, Universal for Off-road Motorcycle ATVs (Black)