we made some changes to give the customers an even broader range of uses. the clips are now a bit more compact for both 1/2″ and 3/8″ poles, you now use 2 clips for BG traps from 110 too the 330 size traps. you just space them apart for the larger traps. They can be used for all shapes, even the round Bg traps. Now here is the Kicker, they can double as a bait clip to save you money. I believe the beaver trappers will fall in love with these as they have been asking for years for me to build them. we will sell them in pairs. please state size of pole when ordering.