The set comes in 8 for use with Team Associated 1600 Factory Team shock set for T-Maxx or E-maxx and all other Associated 1.32 inch shocks.
These springs have more strength than your stock Blue springs
Stock Accosiated Blue Spring 2.5lb/in. (Wire Size 1.25mm)
Shiny Silver Spring 7.5lb/in. (Wire Size 1.4mm)
Package of eight springs(13 x 16.4 x 71mm)(13.5 Turn)