<p><b>Specification:</b></p><p>Material: M42 high speed steel, HSS teeth</p><p>Opening diameter: 4.5"/114mm</p><p>Opening depth: 1.5"/38mm</p><p>Applications: drywall, plywood, acrylic, wood, plastic, thin metal, etc. (Note: not used in ceramics, glass, thick iron, cement and other hard materials)</p><p>Applicable electric drill: 1/2" electric drill</p><p></p><p><b>Note:</b></p><p>It is not advisable to cut the incision too quickly when cutting, and the incision should be slowly advanced. If you use a larger diameter hole opener, the opening should be smoother and slower.</p><p>When tightening the center shaft, you can use a hand or a hex wrench to twist in a clockwise direction.</p><p></p><p><b>Package list:</b></p><p>1× pipe hole opener</p><p>1× heavy duty hexagonal center shaft</p><p>1 x hex wrench</p><p>2× drill bit</p>