This is an extremely hard to find ignitor for a vertical Simplicity hit and miss gas engine made by Western Malleable and Grey Iron Manufacturing Company. It is a brand new faithful reproduction. It has a cast iron body and mounts with two 7/16 inch holes 2 1/2 inches apart on center. The barrel that goes into the cylinder is about 1 1/2 diameter and 2 5/16 long to the maximum length of the movable shaft. This ignitor should fit most of the 2 1/2 and 4 1/2hp vertical engines except the very earliest engines but please measure your engine or consult your parts book to be sure. Everything moves and functions as it should as it is 100% brand new and it is ready to be used on an engine or put on the shelf for a spare. If you’ve been looking for one don’t miss your chance on this one. It will likely be a long time before another one turns up! Let the pictures be your guide. You won’t be disappointed in any way. The last picture is of an original ignitor arranged in a 4 1/2hp engine for orientation reference.