Toolsinvent 8802271 Hola Oval is a specialist oval hole saw for cutting the elongated recess required by 1.5-depth wall boxes. The bit lets electricians install deep flush-mount boxes into plasterboard, aerated concrete, and similar wall materials in one operation. Its oval geometry eliminates the two-hole overlap technique traditionally used for such installations. Typical use is on renovation and new-build wiring where deeper switch or socket accessories are specified.