Features: Elastic cover, it can close to the wall when used, effectively preventing dust from spreading everywhere. Easy to install and clean; Type 135 Dust Collector is suitable for 45-120mm/1.77-4.72in diameter handle drill bit; Type 155 Dust Collector is suitable for 45-140mm/1.77-5.51in diameter handle drill bit; Dust collector is simple assembly and disassembly; Specifications: Material:Plastic+Metal Color:White Option Type:Type 135,Type 155, Type 135 Inner Diameter:Approx.135mm/5.31in; Type 135 Outer Diameter:Approx.155mm/6.1in; Type 135 Height:Approx.70mm/2.76in Type 155 Inner Diameter:Approx.155mm/6.1in; Type 155 Outer Diameter:Approx.180mm/7.09in; Type 155 Height:Approx.100mm/3.94in Type 135 Dust Collector suitable for 45-120mm/1.77-4.72in diameter handle drill bit; Type 155 Dust Collector suitable for 45-140mm/1.77-5.51in diameter handle drill bit; Package Includes: 1xDust Collector note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.