description metal stud punch - 7/8 in. diameter the greenlee metal stud punches are designed to quickly punch holes in metal studs up to 20 gauge thick in one stroke. the self centering aluminum head provides strength with minimum weight to reduce operator fatigue. a contoured handle design gives the operator better leverage as well as providing the ability to reach into tight places. the head is designed to automatically strip out the slug. california proposition 65 warning. features hole size: 7/8 in. stud size: 1-5/8 in. and wider capacity: 20 gauge steel studs made in usa. specifications acme tools brand name greenlee acme tools part number 709 assembled weight (lbs) 7 california proposition 65 warning required no color / finish green country of origin united states electrician tool application cutting electrician tool type stud punch gauge cutting capacity 20 globaltradeitemnumber (gtin) 00783310222804 handle length (in) 20 handle material steel internal supplier part # 50222805 internet product code (ipc) 9d9f09f1552 manufacturer warranty greenlee warrants their products will be free of defects in materials and workmanship. material die cast steel package weight 7.5 package weight (lbs) 7.5 recommended safety equipment safety glasses size (in) 0.875 upc 783310222804