Model C307 is an accessory designed to make feral cat care as stress free as possible. This accessory slides into the rear door slot of transfer cages allowing you to connect multiple transfer cages or squeeze cages together. This product works with model 306, 306NC, and 306NC2 transfer cages and 306SQ, 306NCSQ and 306NC2SQ squeeze cages. Together with trap dividers this product makes it very easy to transfer animals from cages to squeeze cages or create larger recovery spaces by connecting multiple cages together. A separate connection piece is also available to connect traps and cages together. With both model C307 cage to cage connector and C306 trap to cage connector the possibilities are endless.