I bought three sets of Versachuck/Axminster carriers from Beaufort Ink, one of which was faulty. The jaws do not go down dead onto the carriers as the ridge is too large and doesn't fit the groove properly. They have promised to sort this out for me, but they had only fifty sets and sold out on the day. No problems there, but I thought it worth mentioning as they are something that might be bought and not used for weeks or even months, so if you did buy them check they fit. Oddly two sets were perfect and one faulty. Weird.