Highlight description: _x000D_ _x000D_ [HD Optical Lenses] Our peep hole adopts high-definition optical lenses with high clarity and 200-degree wide viewing angle. The length of the door viewer can be adjusted according to the thickness of the door. Suitable for different kinds of household wooden doors, hotel doors, villa doors. _x000D_ _x000D_ [With Peephole Cover] There is a peephole cover on the door viewer to protect your privacy and security. It can be used as a front door peephole to prevent people from staring out of the door and avoid privacy leaks and theft accidents as much as possible._x000D_ _x000D_ [16mm Drill Bit] It is equipped with a matching drill bit (16 mm), suitable for metal openings such as thin iron plates, aluminum alloy, stainless steel, various types of pipes with a thickness of less than 2mm. It can also be used on wooden boards. It can cut and drill holes on uneven workpieces, such as opening holes on various stainless steel pipes._x000D_ _x000D_ [Suitable Equipment] It is suitable for electric hand drills, bench drills or other flat drilling equipment. The clamping range is 10mm-13mm or more. The special hole for chip removal is designed with reasonable structure and rapid chip removal. With continuous cutter, universal handle type, prevents slipping and carries greater torque._x000D_ _x000D_ [Note] When using the drill bit, you should pay attention to the temperature when cutting cold and hard materials. If it is too high, you need to add water. When drilling, please use it step by step and do not use excessive force. _x000D_ Specification:_x000D_ Product Name: Door Viewer Peephole_x000D_ Drill Bit:_x000D_ Material: High Speed Steel_x000D_ Size:_x000D_ Total length: 7cm_x000D_ Diameter: 1.6cm_x000D_ Shank diameter: 10mm_x000D_ The inner depth of the hole opener is 5mm_x000D_ Manual measurement may have 1-3cm error_x000D_ Door Viewer: _x000D_ Size: Suitable for door thickness: 3.5-6cm/1.38-2.36inch_x000D_ Unstretched size: Total length: 4.9cm; Top: 3cm; Tail: 2.5cm; Tube diameter: 1.6cm_x000D_ Extended size: total length: 7.3cm_x000D_ Material: Brass_x000D_ _x000D_ Notes:_x000D_ 1.When using the drill bit, you should pay attention to the temperature when cutting cold and hard materials. If it is too high, you need to add water. When drilling, please use it step by step and do not use excessive force._x000D_ 2.There may be slight differences between the picture and the actual color of the commodity. We will try our best to show you the exact color._x000D_ 3.Please allow slight dimension difference due to manual measurement. _x000D_