BBB - Powerlink LockBBB POWERLINK LOCK The heavy duty steel chain keeps your bike where you left it. The chain is safe, but also light enough so you can take it anywhere with you. A strong lock mechanism and a cover plate prevent dirt and rain ingressing into the key hole. This all makes the Powerlink one of our most durable locks to keep your bike safe for a long time. Durable lock mechanism Chain lock Comes with 3 keys 5mm x 1M Security Level: 8 out of 9