Greenlee 616

3-1/2" Conduit piston for use with blower or vacuum power fishing system to pioneer the line through the conduit run. Flexible foam body for an air-tight seal. Color-coded end disk with embossed size markings for fast, easy selection. Strong steel center rod with loops on both ends. Pistons available for all types and sizes of conduit 1/2" through 6". Standard pack of 3.