American Fishing Wire Surflon Crimp Kit, 30 Pound Test, Black Color
Kit contains a 30 ft. (9.2m) spool of 30 lb. (14kg) Black Surflon 1x7 leader wire, 36 pieces no. 3 Black Crimping Sleeves, and  Lightweight Crimping Pliers for making leaders and rigs. Convenient all-in-one package is a value versus buying  components separately.