The 3 Legged Thing Ultra Clamp with QD4XP Plate is a dual-action, Arca-type compatible clamp that comes with a QD4XP standard 1.5″ Arca-type compatible quick release plate with a built-in quick detach socket, and two XPAND Connector slots.
Key features
- Dual-Action Lever & Twist Knob
- Square Base with 4-Directional Mounting
- 1.5″ Arca-Compatible Quick Release Plate
- Plate Has Built-In Quick-Detach Socket
- 3/8″-16 Thread with 1/4″-20 Adapter
- Adjustable Lever
- Built-In Security Catch
- Precision Measurement Markings
It has a 3/8″-16 thread with a 1/4″-20 adapter and a square base that mounts onto any standard Arca-type head in four directions, providing L-bracket users a true vertical mount. It also has a dual-action adjustable lever that can be configured for left- or right-handed use and a knurled knob to dial in tension.
The precision measurement markings on the clamp enable repeatable, accurate positioning, and a built-in security catch prevents accidental releases.
Pricing & Availability
The 3 Legged Thing Ultra Clamp with QD4XP Plate is available to pre-order for $59.99 USD. You can also buy a Clamp Only version for $44.99 USD.






