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Punches holes in 1/2" poly tubing to insert 1/8" and most 1/4" barbed fittings. Does not make a hole big enough for Tape-Loc 1/4" barbed fitting (IRC450) used with Drip tape. For that purpose, use IRC455 hole punch.
This hole punch is a pain in the butt to use and only makes a tiny hole. I could barely get a 1/4" barb to go into it. DO NOT BUY unless your are only using for 1/8" holesReview by Heather (on 9/20/12)