Use to pull in 2-Inch (50.8 mm) or larger conduit | Each grip has two opposed set screws that provide positive locking | 6500-Pound maximum pulling capacity | Great for heavy long run pulls | Made with galvanized steel aircraft cableAmazon.ca Product Description GRIP KIT, WIRE (629) From the Manufacturer Greenlee's cable pulling grips have two opposed set screws that provide positive locking. Openings in wire grip should be 50 Percent filled with wire to assure slip-proof grip. Can be used to pull 2-Inch (50.8 mm) or larger conduit. Select pulling grips with a maximum-rated capacity that meets or exceeds the cable puller's maximum pulling force. Minimum cable diameter is 3/8-Inch.