P-327 MAIN SPRING: 3/4″ wide, 5/16c, Pear Inner, Circle Loop Outer

P-327 SPRING: ¾” wide, 5/16″ center arbor with pear shape hole, outer end has a circular loop as shown in photo. In 2″ coil. Please note: Springs are NOT returnable. Extreme caution must be used when working with mainsprings! Not responsible for damages or accidents!