P-330 MAIN SPRING: 5/8″ wide, 3/8c, Pear Both Ends, 1.75″ barrel

P-330 SPRING: ⅝” wide, ⅜” center arbor, both ends have pear shaped holes, in 1⅝” coil. Please note: Springs are NOT returnable. Extreme caution must be used when working with mainsprings! Not responsible for damages or accidents!