Heavy Duty comes with heavy duty #6 J Hooks. Dozen package The New Multi-Purpose Swivel. It will even swivel freely on a 1/2" rebar stake. Comes with two J-hooks per swivel. Use in line or on end chain on stake or as drowner Heavy Duty comes with heavy duty 6 J Hooks. Dozen package The New Multi- Purpose Swivel. It will even swivel freely on a 1/2" rebar stake. Comes with two J-hooks per swivel. Use in line or on end chain on stake or as drowner. Traps function better with swivels.