SMALLRIG 3757B magic arm clamp with 1/4" thread

This versatile camera mount clamp combines a compact ballhead magic arm with a robust super clamp, created to attach action cameras, monitors and small lights to bars, tripods and rigs. It offers secure multi-point mounting and adjustable clamping for on-set monitoring and run-and-gun filming, giving you stable support when shooting in tight or unusual positions.

Key Points

The clamp accepts rods from 14 mm to 60 mm in diameter and grips surfaces up to 65 mm thick, so it fits handlebars, roll bars and table edges. It includes threaded holes for 1/4"-20 and 3/8"-16, plus ARRI-type locating holes to speed up attachment of monitors, LED lights and microphones. According to the manufacturer, the maximum load capacity is 3.5 kg, which covers most compact DSLRs, action cameras and small monitors. The crab-shaped body is CNC-machined from aircraft-grade aluminium and stainless steel for increased durability, and built-in non-slip pads help protect gear and improve grip. 🎥

Technical Specifications

• Name: SMALLRIG Camera Mount Clamp 3757B
• Load capacity: 3.5 kg (7.7 lb)
• Compatible rod diameter: 14 mm to 60 mm
• Maximum surface thickness: 65 mm
• Threaded holes: 1/4"-20 and 3/8"-16 plus ARRI 3/8"-16 locating holes

Usage Recommendations

Mount the clamp on round pipes, table edges or stabiliser rings and tighten gradually to avoid overtightening. The lower ballhead features a hexagon-shaped socket for an Allen key to improve grip when securing the arm, and the spherical heads have a spiral form to reduce unwanted rotation while in use. For handheld stabilisers and rigs, position the clamp so the centre of mass stays close to the mounting point to reduce torque on the arm. 🔧

Positive Aspects

This mount is practical when you need quick repositioning of a monitor or light during a shoot. The anti-twist design adds stability during movement and prevents slow drift under load, which can be particularly useful for time-lapse set-ups or follow shots. Consider that its 3.5 kg rating, according to the manufacturer, may not suit heavier cinema cameras or larger pro monitors, so check your accessory weights before use. 🔒