Description SPX Stone/Fenner 12V DC solenoid-operated power up/power down hydraulic bale spike power unit. Designed primarily to operate tines which pick up round bales. This unit incorporates a 2-position, 4-way cartridge valve & double pilot-operated checks to control a double-acting cylinder, to lift-hold-lower the bale. – 12VDC Standard Duty Electric Motor (1787-AC) – Power Up / Power Down – 3-Qt. Steel Reservoir – AFC Series Gear Pump – 12V Solenoid Start Switch – 2500 PSI (Adjustable Relief) The unit is shipped with a high pressure adjustable relief valve which is factory set at 2500 PSI.   Pendant controller available, but sold separately (KG12).