C.H. Hanson 4.9" Brown Wood Lumber Crayon Holder is a round shaped holder for lumber crayons. It is made of wood and is waterproof. It is not suitable for use on wet surfaces. This wooden crayon holder features a removable hard plastic tail cap and a lanyard. It holds C.H. Hanson lumber crayons and can also accommodate both round and hexagon chalk. The polished wood handle with metal tightening adjustment provides a surer grip on all round or hexagonal crayons 1/2 inch in diameter. The hole for wrist thong allows you to keep the holder securely attached to your wrist while you work.