This is a system for one-keying GIVI cases on Honda motorcycles such as the CB400, CL500, CL250, CRF250, Rebel 250/500, Grom, Cross Cub, Super Cub, and Dio110. This is for models that can use the key cylinder 08M71-KZL-841, as shown in the second photo. Even if you're unsure if the above key cylinder can be used, it can be used if the key has a groove (a thinly shaved area) in the same direction as the keys in the third and fourth photos. It's okay if there's a groove in the middle of the key. For the Cross Cub and Super Cub, the key thickness is slightly thinner, which may cause some play and the cylinder may not rotate smoothly. This can be solved with a simple fix, so please comment if you need help. The CB200X cannot be used because the key will not fit, but it can be used if you can widen the keyhole with a file. The first photo shows the OBKN58 Monokey and E43 Monolock, but one-keying is possible with other cases as well. The S250 tool box and GRT720 can also be one-keyed. If you have a Monokey case that uses the security key shown in the fifth photo, you can purchase it immediately. For Monolock cases, you need to replace the rotating claw with one for Monokey. If you want a rotating claw, it will be an additional 700 yen. There are two types of rotating claws: round and square, so please specify the same type as your case (photo 6). The product includes the cylinder set, black sleeve, gold-colored part, and two screws, as shown in the eighth photo. The case and key are not included. The rotating claw is for those who want it for Monolock cases. As an added feature, you can remove the key even when the case is unlocked. This is very convenient when you remove the case from the motorcycle and carry it, or when you open and close it frequently. The material is brass, and it has been black-plated by a plating company. The cylinder has been threaded, making it a GIVI one-keying exclusive cylinder. Please ask if you have any questions. Price negotiation: Not accepted Immediate purchase: OK Thank you.