This is a B3D Products Miter Saw Vacuum adapter for the newer style Zero Clearance Makita Miter Saws. This is an elbow adapter that is meant to fit either the 1 7/8" or 2 1/2" Shop Vacuums. This Adapter will fit both styles of the dust collection as seen in the photos. It will fit the 10" and 12" miter saws that are the newer Zero Clearance design. Your saw must have the hose that connects the upper and lower dust ports in order for this adapter to fit. This is for the purchase of the adapter only and does not include the hose assembly. Our Products are 100% made in the USA. Thank you for supporting B3D Products! Stay Safe and Stay Creative