I never liked the look of the standard rubber flappers on my tips so I had my better half get me these replacements for last Christmas. They slip over the Gibson Power Tips I have now (you can see the line about an inch out from the mounting ring) and there is a SS nut and bolt in the circumferential direction (on the bottom) to hold them on tight. I got the angled style as the flap attachment (and replacement) hardware is better hidden than on the square cut model. IMO, they give a much neater and cleaner look.
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