The Really Right Stuff B22 Plate is fully compatible with any Really Right Stuff dovetail style quick release system, featuring simple anti-twist flanges that prevent twisting between the plate and the mounted device. This quick-release plate utilizes a custom machined 3/8"-16 threaded perfect for your optics with a 3/8" socket. This plate also features an integrated QD socket for attaching slings and other accessories.FeaturesCNC machined3/8" slot for a custom fitAnti-twist flangeIntegrated QD socket