I have the short stubby screwdriver from Clotilde's catalog--like it best because its easier to hold than the z shaped one which I also have. Coins and washers don't work well for me because of arthritis in fingers and can't grip very well at times. Think I paid $3.00 for mine--well worth it. Only about 1 1/2 inches high and works perfectly on my Brother and Pfaff.