Product Name: A large Holsu Ademate of Total name in English: Total Tac4202 Arbor for Hole Saw7/16 "Country of origin: China manufacturer: Total-Total Product Description: It is a base for a saw with a diameter of 7/16 inches, and is used to install holes in different materials that are designed to be compatible with saw holes Qatar 7/16 inch, and thus provides stability And accuracy during use allows you to install the saw holes on the elicitatives or appropriate electrical tools, which allows you to make accurate and easy holes in the material.