I have a couple of these - one for a 16mm chain and another for an 19mm chain. They haven't been tested in an attack yet (hopefully never will be), but they seem like they'd resist better than a Squire SS65 (I've seen those cut). The tolerance is tight when locking a chain, and I'm on my second set of plastic dust caps (they get a little brittle in the cold and snap - but I was sent replacements quickly and for free), but I'd happily buy again.

After recently purchasing my Roundlock,I decided to 'upgrade' part of my permanent garage security by using my 19mm chain (instead of my 16mm).

I phoned David (at Pagmasis)to order the RL21A replacement socket on Wednesday and it was delivered on Friday am, and I fitted it into my new security layout Friday pm !.....How's that for service ???

As usual...nothing too much trouble,quality company......GREAT !

Great customer service, absolutely solid lock, also a good idea that the lock can be used on its own as a disc lock.

I spoke to David from customer service very helpful and knowledgable about the products

I wouldn't normally buy chains/locks manufactured in China.
Some of the stuff is ok for opportunist thieves, but any thieves going out 'tooled up' to steal your bikes, its all too easy.
The Roundlock has now made that a lot harder !

I would imagine Pragmasis have done their own tests on the Roundlock before they decided to sell them ?

thats good enough for me !......

This lock is a 'work of art',and is perfect to use with my Pragmasis chains.
Unique shape,solid feel and good price, I can't think of any way of attacking this lock, except with a very big hammer !!

As usual....Good service, quality stuff, and fast delivery.

Thanks Pragmasis.
[Pragmasis Comment: Yes, we have done quite a lot of testing, and "Made in Taiwan" is not the same as "Made in China", at least not where these locks are concerned :-) Sold Secure have also done extensive testing on these locks, and hence the high level of approval they have.]

Having read the review from Bikesocial for this little lock I had to have one.
I wasn’t disappointed, it’s like a small work of art and looks totally indestructible, it’s basically solid metal!
Also it fits both my 16mm Squire chain and my 13mm Abus too so can serve double duty when out and about, can even be used as a disc lock if I cannot be bothered to take the smaller chain with me.
If the thieves bring a grinder then the chain gets cut, no way to attack this gem of a lock.
Highly recommended, get 2, one for the mantelpiece!
Mark.

Is hefty and looks very well machined, hope to never have it tested by Mr. Bikethief.

2 very minor improvements could be made to an otherwise excellent product.
A small nylon pouch and a slightly more rubberised lock cover, but that's being really picky.

Ordered this to replace my 11 year old Squire padlock which I also bought from Pragmasis. Great lock which is probably easier to use than the padlock and there is a cover to protect the keyhole. As ever, very good and knowledgeable customer service from Pragmasis and I had several email/phone conversations prior to purchase.

Good device which looks like it would be difficult to overcome.