Features: Reduce Mess-up: When you have this bored dust bowl you can reduce the mess of the ground environment when you work. The dust cover can collect the dust from the saw and help drill large diameter holes. Indoor Tools: You don't need a vacuum or even wear a mask and goggles when you use the dust bowl of this drilling machine to collect the dust from the saw. Simple Accessories: The perforator dust cover is easy to connect and seamlessly fits between the cutting tool and the drill chuck. The dustproof bowl of the drilling machine forms a seal on the material surface allowing you to encapsulate all debris. Leave No Marks: You don't have to worry about damaging ceiling or wall materials. Using the dust bowl of this drilling machine when sealed to the surface a sealed cover is formed. Best of all it doesn't leave traces on the ceiling. Customer Service: If you confront any problems about our products please feel free to contact us we are ready to help. We will solve your problems as soon as possible. Specification: Material: Plastic Small Dust Cover with Handle: diameter 155mm inner diameter 125mm height 75mm Large Dust Cover with Handle: diameter 180mm inner diameter 150mm height 100mm Notes: 1. Due to different monitors and lighting effects the actual color may be slightly different from the image. 2. Due to manual measurement please allow 1-3cm deviation. includes: 1Hole Opener Dust Collector "