Lion Drafting Instruments EC-58 Master Bow Set of 3 Spring Compass Large Replacement Set of 3 Suitable for drawing highly accurate circles. The legs open and close by rotating the center wheel, so there's no need for a stopper, allowing for speedy work. This is not a new item. The outer box has scratches, etc. There is a crack in the corner of the plastic case (photo 10). Please consider carefully before purchasing if you are concerned. Thank you for looking! ☺️ Please feel free to comment if you have any questions.