2PCS Car Steering Wheel Booster Auxiliary Ball One Hand Turn Saver Driving Aid

Reversing a boat trailer, or shuffling a long ute into a tight car park, means winding the wheel lock to lock and re-gripping the rim every half turn. A spinner knob gives the hand one fixed place to sit while the wheel keeps rotating underneath it.

A handle that stays still while the rim turns

Each unit is a moulded ball on a clamping base with a metal bearing between the two, so the ball spins on its own axis as the wheel goes round and your palm never has to let go. The ball is about 8 x 5 cm; the fixed part that grips the rim measures roughly 3.5 x 4 cm, small enough to sit on the rim itself rather than bridging a spoke. Two come in the pack.

Where the supplier says to mount it

The recommended position is 10 o'clock for a left-handed driver and 2 o'clock for a right-handed driver. How it fastens is less clear: the supplier calls it a tool-free metal-bearing rotation system in one line, then asks you to clean the wheel surface first for secure adhesion in another. Clamp or adhesive pad is not stated either way, and no clamping force is published. Check the photos and the section of your own rim before ordering.

Key features

• Two per pack: one to fit and one spare.
• Bearing-mounted ball: rotates as the wheel turns instead of twisting in the hand.
• Compact base: the 3.5 x 4 cm fixed part keeps the footprint on the rim small.
• Tool-free fitting: the supplier states no tools are required to install it.

Specifications

• Ball size: 8 x 5 cm (3.1 x 2 in)
• Fixed part size: 3.5 x 4 cm (1.4 x 1.6 in)
• Quantity: 2 pieces
• Colour: black
• Recommended position: 10 o'clock (left-handed), 2 o'clock (right-handed)
• Material: not published by the supplier
• Mounting method: not clearly stated by the supplier

What's in the box

• 2 x steering wheel booster balls

Before you fit this

• A spinner knob changes how the wheel is held. With a hand resting on a fixed knob rather than wrapped around the rim, an airbag deploying or a wheel snapping back to centre after a turn can drive the knob into a hand, wrist or forearm, or catch a sleeve or a loose cuff.
• Mount it well clear of the airbag cover and the indicator and wiper stalks, and turn to full lock both ways to check clearance before driving.
• Requirements for steering aids and for anything attached to a steering wheel vary between Australian states and territories. Check the position that applies where you drive, and with your insurer, before fitting.
• The supplier names no standard, and this is not sold as approved or certified for road use.
• The supplier does not present it as a mobility or disability aid, and no assistive-device claim is made for it.
• Re-check that the base is still tight before every drive. A knob that works loose on a moving wheel is worse than none at all.

Simple hardware, but it changes how you hold the wheel — worth thinking through before it goes on.