The black and silver satin anodized aluminum and steel TLB-1QRL Leveling Base with TQR-2L Tripod Head Quick Disconnect System and Large Plate from Kirk Enterprises attaches to a tripod via its 3/8"-16 mounting socket. This leveling base has an adjustment range of 32°, which is +/-17° in any direction. You can lock the position into place with the over-sized locking wing nut, and the leveler is capable of supporting a load capacity of 25 lb. This Quick Disconnect System provides a quick release that enables you to quickly switch out many types of tripod heads for different photographic applications.