Disposable Electrodes, Sharp dermal tip for use with Aaron 800,900,&950, All disposable electrodes utilize the standard 3/32″ (2.3mm)stainless steel shaft. All molded electrodes feature safety grip insulators combining patient and user safety with easy insertion into and removal from the surgical pencil. All disposable electrodes are manufactured to the highest standards. They come individually packaged sterile, 100/bx