Are you needing a different v7 collar that wraps around your spindle/router?
65mm (Like Makita and Carbide3d Routers or 65mm Spindles)
69mm (Like Dewalt Routers)
All other sizes are like spindles of various sizes.
I have worked to use several dust boots, but this one is a keeper. The magnets are sufficient to hold it in place and love the adjustability. Just wish it were clear but otherwise customer service is top notch as is the collar.