The Logan 704 Glass Cutter is a hand held glass cutting tool that features a hardened steel wheel and an ergonomic handle. These replacement glass cutting wheels are just like a replacement blade for your other types of cutters. After using your glass cutting wheel for a while it will dull and it won't cut as smoothly. Use these replacement blades to get a clean and perfect cut each time. The Glass Cutter itself can be used on its own, or with Logan equipment where cutting heads hook on, including: Team System Mat Cutters Compact Mat Cutters Artist Elite Mat Cutters Simplex Elite Mat Cutters. The blades are the only thing included in this item, purchase cutter separately.