Description & Features:This drill dust collector is perfect for you to use, which is perfect for home installation work and can collect dust effectively during drilling, bringing great convenience to your work. 1. Made of quality PVC material, which is very durable, stable, and easy to use.2. Suitable for bi-metal hole saws, glass hole saws, and other drilling tools with a diameter size less than 11mm in length.3. Designed with excellent thread engagement and stable embedded bearing, which is easy to remove and install.Specifications:Name: Hold Drilling Dust Collection BowlSize: About 17.5x11.2cm/6.88x4.41inchesAperture: About 18mm/ 0.71inchesSpring: About 23x2.2cm/9.05x0.86inchesMaterial: PVCPacking List:Hole Opener Dust Cover*1Spring*1Note:Due to the lighting effects and shooting angles, there is a color difference in the product, please understand.Due to manual measurement, there is a tolerance in the product size.