M12 Fuel Surge 1/4 Hydraulic Driver TOOL ONLY #2551-20. FLUID-DRIVE hydraulic powertrain reduces metal on metal contact within the tool, delivering quieter operation, smoother performance and increased durability over a standard impact. Longer sustained torque delivers similar drive times in application as most 12V impact drivers. Up to 2X quieter operation makes this tool ideal for occupied spaces. Compact head length and compact battery footprint gives more access than competitive impact drivers. POWERSTATE brushless motor delivers maximum power and long motor life. REDLINK PLUS ...