Grisham Safety Screw Driver Tool

The Grisham One-way steel safety screw driver tool is designed to drive large 1 way tamper proof screws that are generally used on security door and window bar installations. The Driver`s hood encapsulates the safety screw head and helps prevent slippage during the fastening process. The driver will accept pan-head safety screws up to 3/4 in. in diameter. The 1/4 in. driver tool shank will attach to any conventional drill chuck or impactor.