SAFE, PRECISE UTILITY KNIFE: PenBlade hobby knife retracts, making it easier and safer for you (no more searching for knife caps!). Surgical grade steel blade offers precision cuts for any DIY project | PREMIUM UTILITY KNIFE: Curved cutting edge and ambidextrous grip offers control for razor-sharp cuts with handy one-push click activation, safety stop, and a built-in ruler. Use the trimming groove for cutting without exposing without exposing the blade | EXTRA SHARP KNIFE BLADE FOR ACCURATE CUTS: Ideal for lightweight to medium-weight materials; Get the precision results you need on card stock, vinyl, rubber, fabric, cardboard, crafting paper and more | FOR THE DIY CRAFTSMAN: Perfect easy-to-use retractable knife for hobbyists, crafters, artists, and bakers. Convenient for fly fishing, first aid kits, drywall repair, auto tint, fondant, twine, thread, yarn, jute & more! | STOCK UP WITH THIS CRAFT KNIFE SET: Ships as a set of (10) knives, blade size 15