For cutting cleaning in moist environments, select the OLFA® SKB-S-R Round Tip Dual-Edge Stainless-Steel Safety Blade. This stainless-steel blade withstands rust and corrosion for easy cleaning. A smooth, rounded tip reduces the chance of tip breaks or puncture occurrences. Use with OLFA® SK-4 Semi-Automatic Self-Retracting Safety Knife, SK-9 Semi-Automatic Self-Retracting Safety Knife with Tape Splitter and SK-14 Semi-Automatic Stainless Steel Self-Retracting Safety Knife. Packs of (10). Materials: bagged goods, up to 3-ply corrugates, films, foam/polystyrene, layers of foil/paper, plastic strapping bands, pallet/shrink-wrap, tape and more.