Anti-sway design, sliding button does not get stuck, quick installation and quick release, wide range of applications, Arca quick release, can install positioning columns Anti-sway design: Built-in anti-sway design, one push to get stable and no shaking, slide to unlock 38MM dovetail groove at the bottom: Applicable to 38mm pan/tilt tripod Arca quick release clips on the market, etc. Unlocking without getting stuck design: The quick release seat can be easily opened without touching the dovetail groove when unlocking by toggling the button Positioning columns can be installed to effectively prevent equipment from reversing. The quick release seat and quick release plate both have British 1/4 Arri positioning holes, which can be used with D3.0/D5.0mm positioning columns and used in 1/4 Arri positioning holes to prevent reversal Material: aluminium alloy colour: As shown Package Contents: 1 x Anti-shake quick-release base kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.