Change your air hammer into a needle scaler with just a twist of the arm! The IR EC400-NS Needle Scaler Attachment gives you the versatility you need to fly through real work. Designed for use with the Ingersoll Rand 114GQC Air Hammer (0.401 diameter barrel), and has a super easy screw on application. Effectively removes paint, rust, dirt and weld slag. Uses 19 3mm diameter steel needles with durable steel housing and has been rigorously tested to ensure its long-lasting performance. For more than 100 years, Ingersoll Rand's advanced engineering, manufacturing, and service models have set a standard of excellence. Trust Ingersoll Rand to help you complete your work faster and easier than ever before.