Exclusive QR-Slide Patented Structure: This quick release plate kit consisted of a top QR plate and a base, just press one button to slide the Nato rail into the groove from both direction, and lock it by releasing the button. The NATO Rail is also compatible with previous NATO clamp accessories. Safety & Sturdy: The Universal QR mount plate kit adopts roll pin positioning technology that roll pins fit snugly into the groove, ensuring firm locking. The top plate and base are matched with high precision to ensure the perfect fit and stability and prevent accidental falling off. Wide Compatibility: The top plate equipped with 1/4"-20 screw, supports most equipment such as lightweight mirrorless cameras, monitors, action cameras, etc. Besides, it has two optional locating pins, which can effectively prevent deflection when used with SmallRig action camera cages (ID: 4119B, 3084C, and 4088B). The mount plate kit can hold up to 5kg / 11lb. Multiple Mounting Solutions: The baseplate features a 1/4"-20 threaded hole and locating hole to attach any accessories with a 1/4"-20 screw, such as SmallRig mini Ball-Head Mounting Support Kit (ID: 2948B), SmallRig mini Tripod (ID: BUT2429, 3905), and accessories with locating pins, including Magic Arm (ID: 3873, 3874, 3875, 3959,4194), as well as SmallRig HawkLock Cage (ID: 4481) HawkLock QR Ecochain: Using with our HawkLock Ecochain can enhance your shooting experience,such as Quick Release Advanced Cage Kit for Sony Alpha 7RV/ Alpha 7 N/ Alpha 75 III (ID:4539); H21 Quick Release Top Handle Kit (ID:4483); H21 Quick Release Rotating Side Handle Kit (ID:4485); H21 Quick Release Monitor Support with NATO Clamp (ID:4487); H38 Quick Release Mount Plate for Arca-Swiss (ID: 4486); H18 Quick Release Support with Cold Shoe (ID:4500); H21 Quick Release Magic Arm with Ball Head (ID:4488; H21 Quick Release Rosette Magic Arm (11") (ID:4489); H21 Quick Release Rosette Magic Arm (7") (ID:4490) Key Features:
1. Exclusive QR-Slide patented structure for NATO clamp with suspended pins that lock the rail after sliding into a groove, making the kit stable and anti-deflection;
2. The mount plate kit can hold up to 5kg / 11lb, ensuring a safe shooting experience;
3. Press the button and slide in the NATO rail in either direction and release the button to lock the rail, enabling effortless and time-saving assembly;
4. Versatile and highly compatible mounting solution; both the top and base plates are equipped with an anti-deflection design (pins/holes) to ensure safety and stability.

SmallRig HawkLock H21 Universal Quick Release Mount Plate Kit 4491 consists of a top quick release plate and a base. Press the button to flare the pins, slide the rail into the groove, and lock it by releasing the button. The precise measurements ensure the perfect fit and stability and prevent accidental falling off. The mount plate kit can hold up to 5kg / 11lb. The quick release plate supports any equipment with 1/4"-20 threads, such as lightweight mirrorless cameras, monitors, action cameras, etc. Besides, it has two optional locating pins, which can effectively prevent the device from deflecting when used with SmallRig action camera cages (e.g.: 4119B, 3084C, and 4088B). The baseplate features a 1/4"-20 threaded hole and locating hole to attach any equipment with a 1/4"-20 screw, e.g.: mini Ball-Head Mounting Support Kit 2948B, mini Tripod BUT2429, 3905, etc., as well as accessories with locating pins, including Magic Arm 3873, 3874, 3875, 3959, and 4194.

In the Box
Quick Release NATO Rail x 1
Quick Release NATO Clamp x 1
Allen Wrench x 2

Specifications
Product Dimensions: 30.8 x 23.5 x 26.5mm / 1.2 x 0.9 x 1.1in
Package Dimensions: 64.0 x 52.5 x 41.0mm / 2.5 x 2.1 x 1.6in
Product Weight: 39.0 ± 5.0g / 1.3 ± 0.2oz
Package Weight: 51.0 ± 5.0g / 1.8 ± 0.2oz
Material(s): Aluminum Alloy, Stainless Steel