SmallRig Mini Rail NATO & quick release (48mm) 2172 Key features: 1. The thinnest (6mm) and most discreet NATO rail on the market. 2. Compatible with accessories with 1/4''-20 threaded holes. 3. Compatible with SmallRig NATO clamps for quick release. 4. Safety pins at both ends to prevent slipping. quick release (48mm) 2172 Is the thinnest NATO rail on the market. Fixed by 1/4''-20 screws. devices such as camera, monitor, wireless video transmitter or receiver, etc., it works with NATO clips for quick attachment and release. It has safety pins. at both ends to prevent accessories from accidentally slipping off. It is low profile so there is no need to remove it before putting your devices back in cases. Compatibility: Universal Package includes 1 x Mini NATO Rail 2x1/4''-20 Screw 1 x Wrench hexagonal Product dimensions: 48x21x6mm Net weight: 10g Materials: Aluminum alloy