Double Stake Swivels are used for cross-staking traps, snares and/or securely staking the Collarum cable. You use 2 rebar stakes and drive into the ground so they form an "X" below ground level, this makes it nearly impossible for an animal to pull up from the ground. The length of the rebar stakes is dependent upon the soil conditions, i.e., sandy soil you should consider using 61cm to 91cm stakes, versus hard-packed soil a pair of 45cm rebar stakes will be sufficient.