The SmallRig HawkLock H21 Quick Release Rotating Side Handle Kit is designed to enhance stability for handheld dynamic filming. Its universal design seamlessly integrates with standard NATO rails. The handle features an exclusive quick-release slider with a patented self-locking system, facilitating the process of handle mounting. Bi-directional sliding offers freedom in installation orientation. A single press enables the handle to smoothly rotate 360° in both directions, facilitating comfortable camera maneuvering at any angle. The ergonomic design of the handle grip incorporates eco-friendly silicone with a textured surface for enhanced grip and comfort. Crafted from aerospace-grade aluminum alloy, the handle supports up to 15kg (33.1 lbs), ensuring durability and sturdiness. The handle features built-in 1/4""-20 threaded holes, an H18 quick-release cold shoe mount, and an H21 quick-release slider, allowing for expansion with accessories such as monitor mounts (ID 4487), magic arms (ID 4488), microphones (ID 3487), LED video light, and more to cater to various shooting scenarios. The kit also features a universal H21 quick-release slider with 1/4""-20 screws, compatible with the new and old cages. The slider is equipped with an anti-slip magnetic locking pin to prevent accidental slipping of the kit. In addition, the integrated magnetic Allen wrench facilitates the assembling and disassembling of accessories.