Easily spliced onto Genoa sheets, outhauls and halyards, the low-profile Tylaska J-Locks fit through most Genoa blocks for fast sheet changes. Unique patented double-locking plunger locks in two directions for the ultimate in flog-free operation. Every unit is pull-tested and released under several different load conditions before shipping. Weight: 1.9oz. MWL: 4000lb. Breaking Strength: 8000lb. Line Diameter: 8–10mm Dimensions: 2.1"L x 1.05"W