Disk lock. D-lock. This model is famous and everyone who knows it understands it is a very good lock. I used this on my previous Pulsar, but it cannot be used on my current Livo bike because the bike's disk is smaller. So, I bought a new one. Now I will sell this. You can check it thoroughly. It has both keys, but one is broken. Location: Badshaniar Bazar, Racecourse, Comilla.