Does this lock comes with something that clearly shows that it is Sold Secure Silver rated (for insurance proof purposes)?

you mean like a certificate? no. It is listed on the sold secure website, if you are looking for insurance for the chain if it's broken off by a thief I believe you should contact Masterlock and see if you can take out an insurance policy, on the packaging there should be a reg.number that you can quote to them, and then you need the reciept of stolen item...... usually you have to hope the thief does not take the lock with them as this will void the claim as lack of evidence/fraud on your behalf and personally i think that if insurance over time cost more than the chain itself you have to make your own judgement, should you take out an insurance policy or would you be better off having more than one lock for your pedal bike or other high risk equipment? Sold Secure are a testing agency but among their tool lists they don't include the common and most effective methods - 42 inch Bolt Croppers (S.S use 24 inch, thief uses 42 inch long bolt croppers) Hydrualic jacks (to bust u locks), long prybars (again only short pry bars, thief would use 50 inch one or up to 66 inches long for leverage), blow torch, upside down air duster and other tools more familiar to regular thieves. Sold Secure covers the oppurtunist, they don't employ the most effective method such as 42 inch bolt cropper, nothing would pass lol Insurance companies have to make money as well and if you don't have the broken lock, proof of purchase and proof item is missing as evidence the insurance is void, you are better off buying a big 16mm grade 100 chain with equal size lock as 16mm is more time consuming to cut, too big for most tools to be effective but this is only 9 mm chain with 10mm u lock, i wouldn't reccomend you bother with insurance for any type of lock, if it does get broken off and taken away with the thief your stuffed, but contact masterlock with reg number on the packaging they will tell you if they do or don't do insurance, bicycle locks are generally too high risk for insurers, they are unlikey to cover you anyway but do some research, phone insurance companies or masterlock for quotes and further information, basically Sold Secure isn't great for testing tbh it is worth their approval but not important, the diameter of locks and chains doesn't change much as angle grinder will go go through any metal with metal cutting wheel, you have to take risks otherwise you can't enjoy life lol

Is it suitable for an electric scooter?

Yes, Excellent for an electric scooter. Have a good day

What mm thickness are the chain links?

I don't have meter here but by guess I'd say 20 mm. As I said the chain is very thick, solid made... If you are not happy with it, you can take meter and measure it yourself in some shop ;-)

Color	Black
Size	41.4 cm x 9.9 cm x 6.8 cm
Style	Hardened Steel
Material composition	Hardened steel
Height	1 millimetres
Item display width	1 millimetres
Shape	Semicircular
Material type	Hardened Steel, Nylon, Vinyl
Number of items	1
Number of pieces	1
Power source	AC
Seasons	Evergreen
Features	Anti-Corrosion, Cut Resistant, Weather Resistant
Sport	Cycling
Included components	One Chain with Mini Padlock
Batteries included?	No
tech_spec_battery_description_toys	Not Included
Brand	Master Lock
Department	Unisex
Manufacturer	Master Lock
Item model number	8234EURDPRO
Product Dimensions	47 x 10 x 4 cm; 1 kg
ASIN	B003QCKAOU

Chain Lock

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