Review on Black Jagwire 4mm Derailleur Housing with L3 Liner - 25' Roll by Keith Baker

shifter cable replaced with this one. Cool, very neat and well finished inside. PAIN TO CUT. I used a Dremel tool with a cutting wheel and was having trouble melting the inner shell and sealing the ends. This is an easy fix, just cut off a little, pause to cool, then cut off some more. Small wire cutters are useless, maybe a hacksaw can handle it, but be prepared for a fight. It's worth it, the rebuilt Shimano RSX rear derailleurs work much better with this new cable. Enough to fix my friends bikes. DO NOT USE FOR BRAKE CABLES, seriously, they are not designed for braking and will fail.