New, Unused I previously listed adjustable-height silver crutches, and I've since found these replacement non-slip caps. Are they suitable for anyone with matching crutches? *Please confirm the size before purchasing, as returns due to size incompatibility will not be accepted.* These caps will definitely fit if your crutches are the same as the ones I previously sold. These replacement caps appear to have metal fittings in the center, suggesting they are sturdy. They are vacuum-packed to prevent damage. The inner diameter of the rubber cap is 1.8mm. *Please examine the photos carefully before purchasing, as this measurement is approximate.* Thank you very much for viewing. Shipping is generally only on Mondays and Fridays. Please be aware of this. Please note that recycled packaging materials will be used.