8500-K4: Wireless Rat FSCV Accessory KitFor first time buyers, Pinnacle recommends an accessory kit for use with the 8500 K2 system. 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): 7036: Clamp Rod 7038: Rat Probe Clamp Assembly 7039: Allen Wrench 8111: 1 8" Bone Screws (pkg. of 12) 8112: Drill Bit 8134 1G: 1G 2 Pin Test Load