What are the locks you can not pick ?
One has no name on it anymore, it was a tag that I cut off as it annoyed me, sorry! And I simply bought it then (10 years ago!) because it was very heavy, very thick, and completely covered in plastic, so reducing scratching, and I thought that it might take a long time to cut through! Nobody has ever tried!
The other one was once sold by Stark, using the Stark name, and its beautifully made, with a plastic carrier, that fits on the casing where the battery is installed. I have just looked and they do not sell it anymore as an accessory! Sorry!
I have tried several times to pick both, its almost become a hobby on its own! Though I have to add, that even being possibly unpickable, is simply not enough, as a cutting disk may make it "Pickable" so to say!!
But as of now as I said before, nobody has tried, and the bike with battery, is simply too heavy to carry far, because both wheels are completely blocked!
I found the packing for the second lock, but all the printing is in Chinese, and it was made by a company called Tonyon. The weblink is "
www.tonyon.com", but I was unable to find it, maybe why Stark is not offering them anymore possibly, the company does not exist anymore...!
I do also have a similar type alarm/lock to this:-
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But I very rarely use it! (Gives self a slapped wrist!)
I am very sorry that I was unable to add better infos and answers for you! But I certainly feel that yo need to spend around 100 UK Pounds for something good, and read the relevant tests through first! Like this maybe:-
Regards
Andy