The Vortex Switchback Carbon Tripod Head Adapter (TRA-SBCDAP) is a compact, lightweight accessory designed to expand the compatibility of the Vortex Switchback Carbon Tripod by allowing it to accept a wider range of tripod heads. Use in combination with the VortexA(R) Switchback(TM) Carbon Tripod to utilize 1/4"-20 or 3/8"-16 compatible tripod heads. Features: Dual Thread Compatibility Spring-Loaded Mount that ensures secure and quick installation Lightweight & Durable Compact Size Designed for Switchback Tripod Seamless integration with Vortex&';s carbon fiber tripod