Lace

33 to 40 stitches = 4” (10 cm)
30-40(+) wpi
US 000 to 1
1.5 to 2.25 mm
B–1 hook
2.25 mm hook

 

These are the most commonly used gauges and needle or hook sizes for specific yarn categories. They're meant to be guidelines only. Read the yarn band for specifics.