PenBlade 10 Pack Carton - # 10 Retractable Stainless Steel Utility & Hobby Knife - Food-Safe Arts & Crafts Cutting Tool - Blade No. 10 SAFE, PRECISE CUTTING TOOL: PenBlade means no more sharp edges and no more searching for knife caps. Surgical grade steel blade offers precision cuts, then retracts with ease for your safety. EXTRA -SHARP: Curved cutting edge offers right & left handed control and razor -sharp cuts for hobbyists, crafters, artists, fly fishing, first aid kits, drywall repair, auto tint, fondant & more. OUR PREMIUM BLADE: Works perfectly on lightweight - medium weight materials. Get the precision results you need on card stock, vinyl, rubber, fabric, cardboard, crafting paper and more. FOR THE DIY CRAFTSMAN: Handy one- push click activation, ambidextrous grip, safety stop and a built-in ruler. Our trimming groove trims twine, thread, yarn, jute & more without exposing the blade. COMFORTABLE & QUICK: Engineered for the safest control, blade retraction is as simple as a clickable ballpoint pen. Heavy-weight Surgical stainless steel curved blade ensures durable accuracy.