The ESP1HN Push Button Pencil with Holster and Needle for Bovie is compatible with all Aaron Electrosurgical Generators and Desiccators. This pencil comes with a needle and a 3 pronged connector. The ESP1HN Pencil is simple to use with two easily pushed buttons and an easy grip handle. Each ESP1HN Push Button Pencil comes sterile and individually packaged. There are 40 pencils per box.