25.4mm (1") Chromoly Braced Layback Seatpost - Chrome 27.2mm This bottom bracket is designed

This bottom bracket is designed to be used with old school 1 piece cranks that are 24 tpi and frames that have a classic American bottom bracket shell

It is a Panaracer Rapide 20

It is a double-wall aluminum rim that is 36-hole for 14g spokes

It is similar to those used on many bikes made in the 70s and early 80's

works with 29x1

25.4mm (1") Chromoly Braced Layback Seatpost - Chrome 27.2mm This bottom bracket is designedThis is a classic braced layback seatpost constructed of chromoly steel. It has a 7 8" top and will fit many mid school and newer BMX bikes. Size: 25. 4mm (1") Length: approx. 15. 5 inches Color: Chrome ***This is a layback post. This means that you must use some common sense when using this part. If you have a bike with a relaxed seat tube angle, or if you are a big guy, or if you raise it to the maximum height, or if you come down on the seat hard,