B3 Archery's Coop Pro is a back tension release inspired by pro staffer Chris Cooper. The innovative hinge-style design features integrated thumb pegs, hourglass tapered handle and an auto hook return without any rubber bands. The Coop also features B3's patented micro adjust sear system. Features: Patented micro-adjust sear systemHourglass 3 finger tapered handleAvailable in brass or brass cerakoteInnovative hinge style designAuto hook return without any rubber bandsIntegrated thumb peg4 sears included B3 Archery B3 Coop Pro Back Tension Brass/Cerakote/Silver Release COOP-PRCK