| There are two different switches used on the Curtis 2000 and 3000 machines. This is the later style, and has a longer white contact switch, approx 1/3". The original type of switch is a Cherry brand, and has a shorter contact switch. These are in very short supply, you will get a new or gently used microswitch, depending on what we have in stock. If you have the older version of switch, Cherry, then you can buy the McGill version, and also order an adapter kit so that it'll work correctly.