Bulletpoint Locking Adjustable Carbon Fibre Kevlar Mounting Arm 4cm-to-4cm — Dual 20mm Sockets, 9-Position Lock

Bulletpoint's 4cm-to-4cm locking mounting arm is a lightweight, durable carbon fiber + Kevlar articulating arm with dual 20mm socket ends for secure, adjustable device mounting.

This compact articulating arm combines aerospace-grade carbon fiber with Kevlar reinforcements and a central joint bracket to deliver a rigid yet light support solution for accessories in the Bulletpoint device-holder ecosystem. Designed to connect two 1.5" segments, the arm gives you precise positioning and firm locking across nine indexed adjustment positions while remaining corrosion-resistant and travel-friendly.

How does the arm achieve both strength and low weight?

The arm uses a carbon fiber main body paired with Kevlar fiber at stress points, producing a high stiffness-to-weight ratio that supports stable mounting without bulk. Aluminum 20mm socket ends provide reliable metal-to-metal interface with Bulletpoint holders while keeping the overall mass low.

• Carbon fiber body for superior rigidity and reduced weight
• Kevlar reinforcement at joints to resist wear and impact
• Aluminum 20mm sockets for durable connections with Bulletpoint gear
• Lightweight design eases transport and reduces load on mounts

What adjustments and angles can I expect from the articulating joint?

The central joint bracket enables up to 90° of articulation in any direction and offers nine indexed positions for repeatable setups. This gives you a wide range of tilt and rotation options while the locking mechanism keeps the chosen angle secure under load.

• Nine indexed adjustment positions for consistent setups
• Maximum 90° articulation range for flexible aiming and alignment
• Positive locking to hold heavy accessories steady
• Dual 4cm segments for compact reach or telescoping assemblies

Will this fit my existing Bulletpoint device-holder setup?

The arm is purpose-built to mate with Bulletpoint components: both ends use a 20mm ball socket size that matches the Bulletpoint cradle and accessory line. That compatibility makes it straightforward to swap or upgrade arms without modifying your current mounts.

• Dual 20mm socket ends match Bulletpoint ecosystem standards
• Designed for two 1.5" (approximately 4cm) mounting segments
• Simple install with standard Bulletpoint connector hardware
• Works with device holders, clamps, and accessory adapters in the same family

How durable is the locking mechanism for daily use?

The locking components and socket interfaces are machined from aluminum and engineered for repetitive use in demanding environments. Corrosion-resistant materials and the Kevlar-reinforced body help maintain performance through travel, vibration, and frequent re-positioning.

• Aluminum sockets resist wear from repeated attachment/detachment
• Kevlar-reinforced junctions reduce long-term fatigue
• Secure lock prevents slippage under vibration or load
• Low-maintenance finish suitable for indoor and mobile setups

Who is this for? The Bulletpoint 4cm-to-4cm locking mounting arm is aimed at photographers, videographers, marine and vehicle equipment installers, and anyone using the Bulletpoint device-holder ecosystem who needs a compact, sturdy, and adjustable link between two 1.5" segments. If you want precise positioning, dependable locking, and a light but tough construction for field or studio work, this arm is purpose-built for that use.