8200-K3: 3-Channel EEG/EMG Mouse System Accessory KitFor first time buyers, Pinnacle recommends an accessory kit for use with the 3 channel EEG EMG mouse system (8200 K1). The kit includes all necessary one time purchase accessories, as well as enough surgical supplies disposables to complete initial surgeries. The kit includes the following (quantities are 1 unless otherwise noted): 8241 F: Screwdriver for Mouse EEG Screws 8249: Test Source 8254: 23 Gauge Needle (4) 8255: Multimeter 9005: Powered USB