Greenlee 724 Stud Punch

Punch up through 20 gauge 0.9 mm steel studs in one stroke Unique patented punch rolls The edge over for smooth installation of armored cable; Cable won't hang up Contoured handle design gives better operator leverage and makes it possible to punch in tight places Automatically centers holes on standard studs Creates 1-1/4-inch holes in steel studsYou may also like Greenlee Lock Adapter,10 ga.,Locking Mechanism SP-LOCK2.