Vortex Pro Binocular Adapter 1x3.5x4.5 Low Black 1.2in 4oz. Compatible with tripod-adaptable binoculars and tripods with a 1/4"-20 socket/thread. Specifications for Vortex Pro Binocular Adapter: Manufacturer: Vortex Color: Black Length: 1 in Weight: 2.8 oz Condition: New Width: 3.5 in Height: 3.8 in Fabric/Material: Aluminum Features of Vortex Pro Binocular Adapter: Rapid mounting 1/4""-20 thread compatibility Aluminum construction Package Contents: Vortex Pro Binocular Adapter 1.3mm Hex Wrench 2mm Hex Wrench Vortex TRA-BINDAP: Pro Binocular Adapter 1x3.5x4.5 Low Black 1.2in 4oz