Sealey motorcycle lock chains sealey dlc01 this motorcycle disc lock chain from sealey is a heavy duty 800mm chain with 8mm square links fitted with durable nylon sleeve for preventing accidental scratching and damage to the bike ideal for creating a slip knot between detachable lock and an object suitable for use with model no dl503 disc brake lock sealey dlc01 motorcycle disc lock chain 8 x 8 x 800mm