[Solid Art LLC ] Dust Port Adaptor – Fits 1 5/8” OD Dust Ports and 1 ¼” OD shop vac. Made to exact dimensions, this dust port adaptor fits snuggly with 1 5/8” OD standard dust ports and 1 ¼” OD standard shop vac ports. See Picture Attached. Compatible with miter saw dust ports of 1 5/8 inch OD. Compatible with DEWALT DWS715, DWS716, DWS779, DWS780 Miter Saws Dust Port. Product Material: PLA Solid Art LLC is registered with the State of Oregon and is not affiliated with DeWalt. We find pride in each piece we produce. Each piece is tested for quality. Made in the USA