Bernard™ Elliptical 7400 Series Contact Tip is 1.25 inch in length and accommodates 0.078 inch welding wire. This thread less contact tip quickly locks in place with a 1/4 inch turn during replacement. Elliptical Contact Tips also offer fully adjustable tip to work distances. Bernard™ Elliptical contact tips are designed to provide adjustable tip to work distances and to allow for fast and easy changeover. Elliptical tips have a much longer surface area for electrical and heat transfer than fine threaded tips for extended tip life.