JAGWIRE L3 25 FEET DERAILLEUR HOUSING ROLLOver the course of time, your cables and cable housing will wear out with regular use. When these pieces begin to wear out, you might have significant shifting and performance loss. In order to ensure your bike's shifting performance stays top-notch, then you'll want to replace your cables and housing. The Jagwire 4mm L3 Derailleur Housing is Pre-Lubricated (L3) allowing for easier and smoother shifts. It comes as a 25-foot roll, so you'll have enough housing to replace the housing on several bikes. Features25-foot roll means you'll have enough housing for several bikes Pre-Lubricated for smoother shifting performance Compatible with Shimano 10 speed shifting systems | Jagwire | 4Mm Sport Derailleur Housing 10M Roll | Silver | Slick-Lube Liner, 10 Meter