The Slice Auto-Retractable Seam Ripper is ideal for industries where fixed blades are prohibited or for anyone looking to find a safer alternative to a manual seam ripper. While retractable seam rippers are available on the market, Slice introduces the first version with advanced ceramic blades. And because the blades are Slice safety ceramics, they feature our finger-friendly cutting edge. Slice seam ripper handles have a long, thin profile and are made of durable glass-filled nylon. They are compatible with both the rounded-tip and pointed-tip seam ripper blades.