Duralink, .109 Smart Lock Set, Metal Device Fits Over The End 3 Hooks On Each Side Of The Splice To Offer The Edges Greater Stability & Resistance To Wear If The Belt & Splice Mistrack, Crimps To The Connecting Pin To Prevent It From Migrating Out Of The Splice During Routine Operation, Includes 20 Smart Locks, 10 Sets & 5' Of Duralink Connecting Cable.