Auto-Retractable Box Cutter sulfurclay according to the San Francisco

according to the San Francisco Chronicle

luxurious background for oil pastel and soft or hard dry pastel drawing

URE-FIL™ 15 can be described as a ‘syntactic foam’

non-acidic blend of dry absorbent clays and biodegradable detergents

it will soak into the end grain

Auto-Retractable Box Cutter sulfurclay according to the San FranciscoThe Slice 10503 Auto Retractable Box Cutter takes safety to a new level with an ergonomic, protective J hook handle and our patent pending safety blades. Avoid injuries with a retractable box cutter that prevents you from accidentally leaving the blade exposed. Keep your fingers safe with our protective handle. This safety box cutter uses 100 percent zirconium oxide blades that are non sparking, non magnetic, chemically inert, safe up to 1600 degrees