These are .005" thick Axle Shims from Team Associated.
FEATURES: Steel construction For 1/4" (6.4mm) diameter axles
Used to remove slop between axle components
INCLUDES: Six .005" thick Axle Shims
REQUIRES: Installing on axles as required
SPECS: Diameter: 0.35" (9mm) Inner Diameter: 0.25" (6.4mm)
Thickness: .005" (0.127mm)