Profile 19mm Hop-Up American Bottom Bracket Set - Polished Silver - USA Made 10" This is a classic braced

This is a classic braced layback post made out of chromoly steel

which is a method of coloring metal

black spider

A special chemical surface etching applied to center tread creates a fine surface texture that enhances traction on wider variety of track surfaces

Color: Black w/ Gumwall

Profile 19mm Hop-Up American Bottom Bracket Set - Polished Silver - USA Made 10" This is a classic bracedFor frames with American BB shells, this Profile Hop Up Kit offers a finished look while providing cups, sealed bearings, a tube spacer, cone washers, and flat washers. The spacers and cups have an anodized finish. This bottom bracket will fit many popular 19mm cranks such as Profile Race, Redline Flight, Fit, DK Social and most any other 19mm crank. Color: Polished