These extra sharp needles are identical to tapestry needles except they have a sharp point which will pass through course fabrics, as well as cotton and wool. Experiment with which size works best for you by purchasing the sampler card and then come back to order your favorite size(s).
The mixed package of needles includes one needle each of sizes 20, 22, 24, 26. Size 22 and 24 are best if you are using size 8 Perle cotton.