This Tilta Top Handle Extension is a 3" straight extension with anti-twist divots on the 3/8"-16 threaded accessory mounting holes. It features a 3/8"-16 threaded mounting screw with two anti-twist pins on one end, and two 3/8"-16 female threaded mounting holes with four anti-twist divots along each of the four sides. The interchangeable rear cap also incorporates a 3/8"-16 anti-twist mounting hole. Built into each side of the handle extension between the two 3/8"-16 anti-twist mounts are two 1/4"-20 threaded mounting holes, making this a versatile system for mounting accessories. The rear 3/8"-16 threaded mounting hole enables you to use a 3/16" hex key (not included) to tighten the handle extension to a device with a 3/8"-16 anti-twist mounting system.
Please note, the hex key is not included as it is a standard 3/16" hex key usually included with the top handle kit.