Greenlee 7211BB-3/4 Knockout Punches Unit, 10 Gauge, 3/4" Fan Control Fits waist sizes: 9" -

Fits waist sizes: 9" - 46"

High carbon steel blade individually ground

Airflow CFM : 1250

Speed Coat™ finish reduces friction and heat

Strike size: 2-7/32" x 1-17/32"

Greenlee 7211BB-3/4 Knockout Punches Unit, 10 Gauge, 3/4" Fan Control Fits waist sizes: 9" -Highlights: 0. 8 Lb Punches mild steel up through 10 gauge Aluminum, fiberglass and plastic Splits slugs for easier removal Hole size is outside diameter of us conduit sizes 1 2 inch conduit and pipe size is 7 8 inch actual hole size 3 4 inch conduit and pipe size is 1. 115 inch actual hole size Punch unit includes punch, die and draw stud Uses standard greenlee dies and draw studs Use with battery, hydraulic, ratchet or manual drivers