Shimano CJ-NX10 is a cassette joint compatible with sprockets ranging from 15T to 23T, designed for use with the Inter-4 Hub and Coaster Brake. Its robust construction ensures reliable performance and durability. The CJ-NX10 enables smooth gear shifting while pedaling, although occasional noises may occur due to the pawls and ratchet mechanism during gear changes. For optimal performance and longevity, it's recommended to use genuine Shimano lubricants and maintenance products.