This system allows you to use the key cylinder that comes with the V-Strom650 (2017~) 650XT 1000 1000XT 1050 1050XT models to make GIVI cases one-key. New V-Strom 800DE/1050DE/1050 models do not come with a key cylinder, so you will need to prepare your own cylinder or consider the "GIVI One-Key System for Suzuki Bikes" which is listed separately. If you prepare your own cylinder, it is for resin top cases/resin side cases. The first photo shows the OBKN58 Monokey and E43 Monolock, but you can make other cases one-key as well. S250 toolboxes and GRT720s can also be made one-key. If you have a Monokey case that uses the security key in the fourth photo, you can purchase it immediately. (Smart lock keys cannot be used) 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 5) The product is the black sleeve, gold-colored parts, and two screws shown in the sixth 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 bike and carry it around, or when you open and close it frequently. The material is brass, and it has been black-plated by a plating company. If you have any questions, please ask. If you want a set of 3 (5800 yen) or a set of 2 (4000 yen), please comment in the question section. There is an installation video. Please take a look for reference. https://youtu.be/-DbeqXFpMo4 Price negotiation not accepted. Immediate purchase OK. Thank you.