SMALLRIG Rosette Extension Arm Dogbone Length Adjustable - Solid

In this review of the SMALLRIG Rosette Extension Arm Dogbone 1870, the bottom line is simple: it is a compact, sturdy rosette extension for shooters who need adjustable reach and reliable mounts. The arm shines when used to reposition ARRI-style rosette handles or attach rosette-mounted accessories, giving 167mm to 255mm of extension and a NATO rail for quick fore-aft adjustment. Build quality and length options are the standout reasons to consider it, while compatibility with every rosette system may require checking specific head fittings.

Key Features

• Adjustable extension: The arm provides 167mm to 255mm of extension so users can fine-tune handle reach for different rigs.
• Standard rosette ends: Both ends use ARRI-standard rosettes (M6, 31.8mm diameter) so common rosette handles and bases can be mounted.
• NATO rail center: A NATO rail in the middle lets you slide the arm forwards and backwards quickly using the M5 thumbscrew for fast repositioning.
• Bidirectional use: The dogbone design can be used on both sides of a rig, offering flexibility when building left- or right-hand setups.
• Male and female rosette heads: Includes both male and female style rosette compatibility, expanding which accessories will connect directly.

Who It's For

The SMALLRIG 1870 is aimed at professional and enthusiast video shooters who already use ARRI-style rosettes and need a short, adjustable arm to change handle position without reconfiguring the whole rig. It is particularly useful for users mounting wooden handles, rosette grips, or camcorder baseplates that accept rosette fittings.

Shooting teams who require universal compatibility across every brand of rosette might need to verify mating surfaces before purchase, as one customer noted mixed functionality with a specific Arri rosette on a different camera. For complete systems that require longer reach or integrated cable routing, a longer dedicated support arm may be more suitable.

Pros & Cons

Pros

• Solid build quality that feels durable on professional setups.
• Adjustable 167mm-255mm length gives practical reach without added bulk.
• NATO rail and M5 thumbscrew enable fast, tool-free fore-aft adjustment.
• Works with common SmallRig handles and rosette-mounted bases for flexible setups.

Cons

• Some users reported compatibility issues with certain Arri rosettes, so verify fit with your specific camera or baseplate.
• Not a replacement for longer articulated arms when extreme reach or multiple axis adjustment is required.

Specifications

Product	Rosette Extension Arm Dogbone 1870
Extension range	167mm - 255mm
Rosette standard	M6, 31.8mm diameter (ARRI-style)
Center interface	NATO rail with M5 thumbscrew
Compatibility	Attach ARRI-style rosette handles and rosette devices
Use	Bidirectional on both sides of a rig

Our Verdict

The SMALLRIG Rosette Extension Arm Dogbone 1870 is a compact and well-built solution for filmmakers who need adjustable handle placement and fast fore-aft adjustment. It delivers good value when paired with ARRI-style rosette handles and SmallRig accessories, though buyers should confirm compatibility with any nonstandard rosette heads before committing.

Frequently Asked Questions

Will this arm fit ARRI rosette handles?
Yes, it uses ARRI-standard M6 rosettes, but a few users have reported mixed fit with specific Arri heads so it is wise to check the mating geometry first.

Can the NATO rail be repositioned without tools?
Yes, the NATO rail is adjusted by loosening and tightening the M5 thumbscrew for quick forward and backward movement.

Is the arm reversible for left- and right-side mounting?
Yes, the dogbone design allows use on both sides of a rig for flexible handle positioning.