Shimanong Chains
Those are not authentic products of Shimano, with price range: between ₱99 to ₱350+
We used to call it Shimanong Chains, that can last for a few months or year if you're lucky, but it's always depends on usage, and there's a possibility that it might gave up on you during the long climb.
The maximum estimated wear is on 2,000 Kilometers, based on some "review" that I watched that compares it to the Original Shimano Chains that can last 6,000 Kilometersbof usage or more. (Machine pressure pulling test)
I still have my original 10 year old Shimano chains, mas okay pa nga gamitin, tahimik when shifting and pedaling compared to Shimanong chains that I'm currently testing.
Wala na curious lang to use it.
After 2 to 3 times of using it, ang inggay na ng chains, and its a hit and miss when shifting, ramdam na nahihirapan shifting to a higher teeth or lower gear cogs.