3M™ Hand-Masker™ Paper Blade is a durable, stainless steel blade intended for use with 3M™ Hand-Masker™ System Tools.3M Hand-Masker Paper Blade, PB12 is for use with 3M Hand-Masker System Tools such as the 3M Hand-Masker Dispenser and M3000. It includes a durable, stainless-steel 12" paper blade and is great for protecting windows, railings and other surfaces during painting projects.