The MILWAUKEE Universal Fit OPEN-LOK Tapered Sealant Cutting Blade 5 Pack is designed for Oscillating Multi-Tools. This multi-tool sealant cutting blade is made from solid stainless steel with a tapered triple ground cutting edge. The tapered shape is ideal for plunging into sealant in expansion joints, the side ground edges are perfect for side to side scraping and cutting, and the thick kerf extends blade life and maintains rigidity.