Constituent parts of the bow.

These are (a) the stick, (b) the hair, (c) the nut, (d) the screw, (e) the head or point, (f) the lapping.

The stick is made of Pernambuco or Brazil wood; the hair is white horse hair, that taken from living horses being the best, though less often obtained. The screw serves to give the stick its proper curve. The lapping helps to give the fingers a firmer hold, avoiding contact with the smooth stick. Silk, silver wire, or leather is used for the lapping.[8]