Stanley GD50 Ground Rod Drivers, they  drive 1/2 to 1 inch rod from the top of the rod. A valve, in-line on the hoses, permits control of the GD50 while it is slung to the top of the rod.

FEATURES

• 5-9 gpm (19-34 lpm) operating range
• In-line valve on hoses for ON/OFF control
• Assist handles
• Lifting eye
• HTMA quick disconnect couplers

Specifications:

• Model           Weight    Length    Width    Rod Size      Features
• GD50132RF   52 lb      25 in       16 in      1/2-5/8 in    Dia in-line valve & hoses