Made of flexible plastic.; The MSD Module Holders are exactly what you need to keep track of your MSD RPM or Retard Modules.;.
MSD 8670 RPM Module Selector, 3000-5200 RPM, 200 RPM Increments (NOS)
Vintage MSD # 8746 RPM Module Kit 6000 Series Has (2) 6000 RPM Modules
MSD 8747 RPM Module Kit, 7000 Series @ Speed Tech
MSD 8676 Timing Module Selector, 0-11 Degrees, 1 Degree Increments @ Speed Tech
MSD 8744 RPM Module Kit, 4000 Series @ Speed Tech
MSD Ignition RPM Module Chip 4100-4900 RPM Automotive Performance
