A jar, bottle or tap turner adds a gripping surface around a compatible lid or knob. Choosing one starts with the object you want to turn: its diameter, shape and surrounding space matter as much as the tool itself.
This guide explains the six ring sizes in the Max Mobility Jar, Bottle and Tap Turners set, what to measure before ordering, and when to compare a different style of grip aid.
What is included in the Max Mobility turner set?
The Zeta JBT1 set contains three lightweight moulded-plastic turners. Each has an upper and lower ring with a pliable inner gripping surface, giving six ring-size options across the set.
The supplier brochure lists the following approximate ring diameters. These are product dimensions, not a guarantee that every lid or tap with the same measurement will fit.
| Turner | Upper ring | Lower ring |
|---|---|---|
| Small, orange | 31 mm | 37 mm |
| Medium, green | 52 mm | 63 mm |
| Large, blue | 72 mm | 83 mm |
Three checks before choosing a jar or bottle opener
1. Measure the part you need to grip
Measure across the outside of the lid or knob. Note whether it is round, tapered, ridged or an unusual shape. Compare that information with the product specifications and ask for help if the fit is uncertain.
2. Check the space around it
A lid sitting close to another container, or a tap knob near a wall, may leave limited room for your hand and the turner. Look at the space available through the turning movement, rather than checking the diameter alone.
3. Think about holding the container
Opening a jar involves both turning the lid and keeping the container steady. This set is a hand-operated grip aid. Do not assume it provides a one-handed opening system or will release every tight seal.
Can the same turner be used on taps?
The set is described for jars, bottles and taps, but tap designs vary. Compare the knob shape, diameter and clearance with the turner before buying. A product name alone does not confirm compatibility with your tapware.
For a round door knob, compare a purpose-designed cover such as Great Grips or Able Life EZ Door Knob Grips. Check the fitting guidance for the exact product; these are separate options, and you do not need both covers for the same task.
Plan your purchase around the task
List the jars, bottles or knobs that cause difficulty and record their measurements. Start with the tool that addresses that task. Add another grip aid only if it serves a separate need and its fit has been checked.
Before ordering, review the current product page, supplied instructions and availability. If you need help checking a specification, contact Sensory Assist with the product name and measurements. For advice about an aid suited to your hand function, ask your occupational therapist or care team.
View the Max Mobility Jar, Bottle and Tap Turners set, or browse our Daily Living Aids for tools for other household tasks.
Product information source
Ring sizes and construction details are taken from the Max Mobility Zeta JBT1 supplier brochure linked on the product page. Confirm the supplied version and fitting guidance before use.