Features 1、100% brand new and high quality. 2、There is a 150, 190 and 250 general air hammer retaining spring which can cushion the working machine 3、Made of carbon steel material, durable to use. 4、It is easy and convenient to replace. 5、Small body and stable performance. Specification Features: 1. 100% brand new and high quality. 2. There is a 150, 190 and 250 general air hammer retaining spring which can cushion the working machine 3. Made of carbon steel material, durable to use. 4. It is easy and convenient to replace. 5. Small body and stable performance. Specification: Condition: 100% Brand New Color: Black Material: Carbon Steel Number Of Wire Rings: 8 Turns Weight: Approx. 58g / 2.0oz Outer Diameter of the Spring Ring: Approx. 34.4mm / 1.4in Inner Diameter of Spring Coil: Approx. 28mm / 1.1in Wire Diameter: Approx. 3.18mm / 0.1in Package List: 1 * Air Hammer Retaining Spring Package List