1UP 3x6x2mm Precision Aluminum Shims Blue 12pcs 80314 Traction Compound they eventually hit upon the

they eventually hit upon the highly successful M10 design with well-sloped (if rather thin

(Sold Separately

the recess is machined with no anodizing to insure exact bearing tolerances

5mm aluminum chassis with center spine reinforcement

If your track only allows charging up to 4

1UP 3x6x2mm Precision Aluminum Shims Blue 12pcs 80314 Traction Compound they eventually hit upon thePrecision Aluminum Shims are cut on a CNC lathe to strict tolerances before receiving their beautiful glossy anodized finish! Use these with M3 screws or ball studs, or with any 3mm pins to ensure accurate settings every time! 12 pieces per package.