Sullivan Circle Triggers help reduce "trigger avoidance" commonly encountered with standard V-wire triggers. The round opening provides an inviting passageway for the target animal. They are made of heavier gauge wire to resist bending. Each trigger comes complete with a two-piece bracket and bolts for quick and easy installation on your traps. Fits BMI Magnum #55, #110, #116 and Victor Conibear 120-2.