The PowerSight STKS Fiberglass hotsticks are for use with the 15KVP medium voltage probe. One set of STKS consists of 3 fiberglass sections, 18 inches long and 1-1/4 inches in diameter. Each section has industry standard male and female ends for screwing them together. Screwing one set together and into a 15KVP probe provides over 5 foot of distance when connecting/disconnecting the 15KVP. One set of sticks required for each 15KVP. Each hot stick is bright yellow, signifying danger and highlighting dirt, grease, or cracks.