Wante to go to 46t cog from 42t this was the cheapest and easies method have used for a few weeks in very steep trails and forestry roads without any problems, had to change my chain and also b screw, excellent product.
Fitted this to my hardtail along with a road link for a sram x9 derailleur with a 34 tooth ring upfront. This setup so far has been faultless crisp shifting good climbing gear along with a bit more for the flats.
Just don't forget the road link for sram or goat link for Shimano.
Fitted to my hardtail using a xt medium cage rear mech with rad cage fitted it works fine. Saves £ over expensive 11/12 speed setup.
You could use a rear derailleur extender bought off here instead of rad cage.
Some people use an 11 speed rear mech with 10 speed shifter but, that’s not a fault with the cassette.
For those with 10 speed systems seeking lower gearing for climbs this is an excellent solution. Will probably need a Wolf Tooth Road link ($23) and long B-screw but then all works well. Currently only available from China or Europe but in US next Spring and price should drop then.