Top quality Black & Silver tools are made of hardened high-carbon steel. Full tang construction. handle and blade are locked together with a patented process for accurate handle alignment and prevention of spreading and pinching. Nylon handle resists wear, abrasion, and common solvents. Large metal-grommeted hang hole. No. 02550: 4'' flexible blade No. 02750: 5'' flexible blade No. 02850: 6'' flexible blade