Set includes 6" speed compass with inter-changeable pen, pencil, divider parts, and replaceable needle points. 4½" bow compass with inter-changeable pen, pencil, and divider parts. 6" beam bar and slide coupling for circles up to 28" in diameter and 6" friction divider with self centering gear head and replaceable needle points. Set also includes mechanical lead holder, slip handle for spare ruling pen, lead pointer, center tack, and screwdriver. Packaged in seethrough, hard plastic case.