B3 Archery Rook Release OD Green/Black. This system gives you the accuracy of a single jaw and the simplicity of a dual-jaw. The Rook Swivel also features a curved trigger and shape of the Rook is unique to B3 it has an hourglass shape that will give you some more leverage to get your bow back in a hunting situation. Specifications for B3 Archery Rook Release: Manufacturer: B3 Archery Color: Black OD Green Age Group: Adults Features of B3 Archery Rook Release: Black stainless steel load jaw Improved release body design Patented swivel connector One anodized guide jaw Multiple length settings Package Contents: B3 Archery Rook Release B3 Archery RKFC-OD: Rook Release OD Green/Black