The Highland Stainless Steel Pony Mount is a simple metal clamp for attaching a small cylinder to a larger one – or in my case a small cylinder to a rebreather canister. A standard cam band is used to attach the clamp to the large cylinder / rebreather canister and then the smaller bottle is held in place by the provided strap which clamps down securely on the cylinder. The piece which fits between the two cylinders has a different radius on each side – a smaller one for the pony cylinder and a larger one for the main bottle. Convenient rubber feet also stop the clamp from slipping on the cylinders.

• Pony Clamp on stage Pony Clamp on stage
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• closing catch closing catch
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I was impressed by the solid no nonsense design, its bombproof and looks the business. The Velcro strap can be easily adjusted to different sized bottles and it was very quick and easy to use.

Most of the other clamps on the market use jubilee clips to attach an adapter directly to the pony cylinder – the advantage with the Highland model is that any small cylinder can be picked up and attached quickly without needing a screw driver and bands. You also don’t get the sharp ends and bit of metal associated with the other style of clamps.

It feels very secure in the water but of course this depends on how well you tighten the cam band.