It does not have any magnetism, besides the ball bearings.
It has a very long 4-3/8 shackle from top of ball bearing cutout. 2"H x 1-5/8Wx7/8W and 6 or 7mm shackle diameter.
There is no bolt inside the open hole.
From my quick searches, there is a master key to get the keyway open.
I found this youtube video, lock is very similar to mine, with the emblem. Can assume in that video, that the lock was already locked and he picked it.
https://www.youtube.com/watch?v=cvd_NIoh0sc
Questions
What do I need to do in order to get the keyway core out, and get a new one in there from a Locksmith?
How much will it cost for a new core with decent pins, serraded, spools, shims.
Is this lock average for picking?
I doubt non steel locks are any good at forceful attacks, like bolt cutters or grinders. So I am doubtful on this BEST lock.
Maybe I can atleast buy a hardened steel shackle from the Locksmith? or make one myself from the steel shop.
I know hardened steel locks are preferred, so I just keep looking, so many to choose from from reputable stores, Aucklands, Gregg, BSH. I just stay away from HD, Lowes/Rona, Crappy Tire.
Been watching Youtube
Bosnian Bill and LPL to get an idea of a good lock. But I found this BEST in my pile of stuff bin.
Since it is an all Aluminum lock, I would assume its not a good lock, but I plan to weld on a shroud and do some beads around the shackle for anti-shim (just above when its locked)
Other Options on Auckland Grainger site
This BEST lock is only locking up a bicycle, my previous U-lock from Mountain Equipment COOP (R.E.I.) lost an endcap and shows some plastic on the inside.
I got some hardened steel chain lined up from Auckland Grainger, they sell locks there too.
I was shocked to see how lame the Master Locks are, so I was looking at American Lock, but ML owns them too

I know if the thief wants it, they do forceful measures. Its more for peace of mind.
The American Lock 5200 is $19.84, hardened steel all around, 5/16 shackle, so 1/16th bigger then 1/4.... so not impressive, but the price is right!
1/2" start at $75
7/16 start at $40 6230 Master Lock though, so I assume they can be raked in seconds.
7/16 then jumps to $45 then to $50+.
3/8 is $35 with a shroud M.L.#7050.
3/8 shackle disc lock M.L.# 40KAD0501 $23 I could weld on that one too.
So many choices to choose from.