OESD Perfect Hole Punch Tool OESD828P. OESD's Perfect Punch tool makes creating holes in your project simple and effortless. No more lost punches. Convenient in-handle storage holds year extra tips. Three tips included: 2mm, 3mm, and 4mm. Instructions for use: Place project on self-healing cutting mat. Insert desired tip punch size into your tool by unscrewing the collar, placing the tip and retightening. Place cutting tip on desired hole location. Press straight down with firm, even pressure to create a clean and precise hole. CHK-OESD828P