Raizi Angle Grinder Cutting Dust ShroudFits most 4 and 5 inch hand grinders, 115mm/125mm saw blades, not fit polishers.Fast and Easy installation with our installation instructions.ApplicationPractically eliminates dust completelyEstimate cutting dust and debris by at least 95%Most of dust and larger particles were contained by the shroud and sucked into the vacuum.In order to be able to connect various types of vacuum cleaners, the diameter of the cutting dust shroud may be somewhat large, you may need to wrap the pipe of the vacuum cleaner.If you don't know how to install it,please send messages to us,we will send the installation video to you.Good tools, Easy work !