Sealey motorcycle lock chains sealey cla1090 this motorcycle chain lock from sealey is a heavy duty 105mm square link chain fitted with durable nylon sleeve for avoiding accidental scratching and damage to the bike features extra long 105mm thick shrouded shackle with anti drill anti saw and anti pick protection on the locking cylinder 4 art approval sealey cla1090 motorcycle chain lock 105 x 105 x 900mm 4 art approved