The Field Optics Research Rapid-Release Universal Bino Adapter Gen 2 Kit includes 1 Rapid-Release Tripod Adapter and 1 Rapid-Release Bino Receiver. The base plate of the Gen 2 version fits Arca Swiss, Manfrotto 200PL, and accepts 1/4"-20 plates. The tripod adapter attaches to your tripod, while the receiver attaches to the tripod mount hold on the front of the hinge of your binoculars. When you want to put your binoculars on the tripod, you slide the slot of the Rapid-Release Bino Receiver over the end of the Rapid-Release Bino Adapter and push down. The adapter's spring clip secures the receiver to the adapter for a solid connection.