LEM Shroud Attachments x8 Shroud Spring X8 On either side of every second attachment Fill and Drain X2 These also have vent holes to allow pressure equalization. They fit into a 0.5 inch hole. There should also be a hole in the inner body tube to allow for equalization in the parachute space Drill guide x1 Used for proper placement of part post holes. Triangles are for aligning vertical placement lines. Horizontal is aligned using the lower central hole.