Weldclass Electrode Holder This Electrode Holder has a twist lock action which is a popular choice of holder, due to their ability to clamp onto electrodes with a screw down action, ensuring optimum current flow. The holder is designed for quick and easy installation of electrodes, by providing a firm grip, and can be used to within 1 inch of high heat, whereby giving the user more flexibility and protection. It is suitable for lead set for stick welders.