Drill Dust Collector Helps you reduce the dust and debris from each drill hole by 90-95%. Saved you tons of clean up time after overhead drilling. Made of thick silicone, rubbery in texture and flexibility.bowl shape design with a hole at the bottom. Instead of easily breaking plastic bushing on bottom hole, we tooled out a silicone solid lip which can beat others’ plastic bushing. Never worry about breaking. Material: Rubber. Color:White. Overall length: about 13 cm / 5.11 in. Recommended bit range:6-14mm.