Kore stronghold narrow wide 1x chainringthe new kore stronghold narrowwide chainring uses a patented hooked tooth design that grabs and holds the chain around the ring when riding without slowing down release at the appropriate point that means excellent chain retention so eliminates the need for a chain guide coupled together with kores megarange cassette sprocket adaptor you can simply change your 2x10 set up into a 1x10 set up at a super economical price this set up gives you a wide 1x10