This model has been remixed to fit a Ridgid NXT (2.25" hose) to a DeWalt Sliding Compound Miter Saw - specifically model DWS780 but it will fit other models. Chamfers have been added to the vac locking mechanism and from the larger cylinder to the smaller cylinder to add strength.
According to Amazon: https://www.amazon.com/DeWalt-DWS780-Replacement-Assembly-N041726/dp/B009L32D7U
“Compatible with DeWalt miter saw models : DWS780 Type 1, DWS780 Type 1, DWS782 (Type 20), DWS782 (Type 20), DHS790AB (Type 20), DHS790AT2 (Type 20).”
More models may be compatible if the dust chute end OD measures approximately 1.68in (42.7mm) or the vac hose measures 2.25in (57.2mm) OD.