Features: Nine pores sizes（ 3-12mm aperture) The aluminum alloy forging and carvings process is lightweight and beautiful, sturdy and durable, The snap on soft cover tightly fits to prevent dust leakage, and is a good helper for drilling. The dust collector kit with aluminum alloy rings can meet most of your needs for electric hammer, electric pick, impact drills, hand drills, etc. Made of high-heat and wear-resistant aluminum alloy, preventing wear and breakage due to heating and rotations during use. Usage scenarios: home installation, wall opening, engineering installation, etc. Applicable models: impact drill, electric hand drill. Specifications: Material:Aluminum Alloy Suitable for 3-12mm aperture power tools Package Includes: 1x Drill Dust Cover Collector note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.