Parma's Stock Master Stock Prod is specifically designed for close applications, such as chute loading. Utilizing advanced solid state circuitry, it features no moving parts and offers superior power and a high output. The innovative instant-on technology delivers an effective and safe shock, eliminating the need to wait for a motor to spin-up. Harnessing extreme battery economy, the unit uses 2 C cell batteries (included), providing for reliable, trouble-free operation.