Duke Coil Spring Traps. This style of trap has been in use since the early part of the 20th century and is widely accepted as a cost effective and efficient tool for managing wildlife populations. Coil Spring Traps are manufactured of steel components and powered by a set of compact coil springs. Models range from the small #1 CS with a 4" jaw spread for Mink to the larger #4 CS 4X with a 6.5" jaw spread for Coyote. Duke also offers two models of humane rubber padded jaw traps for Fox and Coyote. Package Contents: Duke Coil Spring Traps