1. Material: High speed steel. 2. Application: mainly for cutting foam, bubble, resins, Styrofoam, Cotton rose board, MDF ETC. Specification:1. ... -8mm, CEL-25mm, SHK-8mm, OVL-70mm2. Application: Used for cutting foam, bubble, resins, Styrofoam, Cotton rose board, Low or Middle MDF ... etc.3.Much cheaper than the solid carbide ones, suit for bulk-buying.4. If you have any question, please contact ...