This Milwaukee square set includes a 7-in. rafter square and a 4-1/2 in. trim square. Both Milwaukee squares feature high visibility laser etched markings that will not wear off after heavy use and are built from a durable extruded aluminum frame. The 7- in. rafter square features scribe notches from 1-in. - 6 in. allowing for quick and accurate marks on lumber and the 1-in. cutout helps prop pipe allowing users to cut it more easily on the jobsite. The 4-1/2 in. trim square is 35% smaller in size to easily fit into tight work spaces as well as pockets and pouches. The 1/4 in. and 3/8 in. dual measurement heel also allows you to perform quick marks.