Pair of calibrated jet gauges
1 - 0.45 - 1.50mm (.45 to 1.30 in .05 increments & 1.40, 1.50) (16 sizes)
2 - 1.5 - 3.0mm (in 0.10 increments) (16 sizes)
German manufactured and to exact tolerances
A must have for any serious carburettor tuner.