Nilkatss 20mm Ball Mount Extension Arms, 2-Pack Aluminum Dual-Socket Rods with 2×360° Joints

Nilkatss 2pcs 20mm ball mount extension arms are dual-socket aluminum linkage rods that extend and angle 20mm ball-based mounts for phones, action cameras and accessories.

These extension arms give you extra reach and flexible positioning when your device needs to clear vents, dash controls or awkward mounting points. Built from aluminum alloy with textured knobs and fully rotatable ball joints, each rod is made for repeated adjustment on motorcycles, cars, boats and other gear that use a 20mm (0.787") ball socket. Before ordering, confirm your mount uses a 20mm ball—this kit is not compatible with 17mm, 22mm, 25mm or 1" (25.4mm) systems.

How do these arms improve my existing mount setup?

They add length and articulation so your phone or camera can sit where it’s most useful without interfering with controls or sightlines. Two ball joints provide separate swivel points, letting you fine-tune tilt and rotation independently for a stable viewing angle.

• Gives extra reach to move devices away from vents and dashboards
• Two independently adjustable 360° joints for precise angle control
• Knurled locking knobs for firm clamping when tightened
• Compatible only with 20mm ball sockets—measure before purchase

What materials and build features ensure durability?

The rods are machined from aluminum alloy to balance strength and low weight, while the ball heads include anti-slip surfaces to reduce slippage under vibration. The kit is intended for rugged use, but periodic retightening is recommended for heavy devices or prolonged rough conditions.

• Aluminum alloy body for corrosion resistance and lightness
• Textured knobs and anti-slip ball surfaces improve grip
• Designed to withstand outdoor and off-road conditions
• Regular tightening advised for heavy gear and long rides

How simple is installation and adjustment?

Assembly is straightforward: attach the ball ends into compatible 20mm sockets and tighten the locking knobs. You can change length by adding or removing linkage pieces and adjust both joints to find the correct center-console, windshield or handlebar position.

• Push-fit into 20mm ball sockets then secure with the knobs
• Mix and match linkage components to vary arm length
• Visual measurement guide included in product images to confirm 20mm fit
• Ensure knobs are fully tightened and mounting surfaces are dry

Will these work with my phone mount or action camera?

If your device holder or base has a 20mm ball socket, these extension arms will attach directly to provide more positioning options. They do not fit other ball sizes, so verifying socket diameter with calipers or a ruler is essential.

• Designed exclusively for 20mm (0.787") ball sockets
• Not compatible with 17mm, 22mm, 25mm or 1" (25.4mm) balls
• Best for mounts that need extra clearance or alternate viewing angles
• Periodic re-tightening recommended under heavy vibration

Who is this for? Riders, drivers and gear owners who need extra reach and flexible mounting angles—motorcyclists wanting dash clearance, drivers avoiding blocked vents, photographers and action-sports enthusiasts seeking alternate camera positions, and anyone using accessories built around a 20mm ball socket. If your mounting platform uses a different ball size, choose an appropriate adapter or a product matched to that diameter.