SeaLux Marine Multi Purpose Universal Anchor Shackle Key with bottle opener SeaLux Anchor Shackle tool with two varying size shackle slots, A flat blade end for opening tins or as a screw driver and two sizes of can opener. Has a small drilled hole for connecting a lanyard (not included). 4-3/8" long, 13/16" Width Made of Marine Grade 316 Stainless Steel