Coon Creek Coil Spring Trap Setters
They lock up great on the trap spring/spring pin and are long enough you can use a foot, or my favorite, your forearm so you have a free working hand to set. Heavy duty, 3/8 round stock these are made to withstand years of service. Here is a partial list of traps it fits: MB 650, MB 500, Duke #4 square jaw 4-coil, Duke #2 square jaw, etc.