Exercise Resistance Band Door Anchor. Premium Heavy Duty Workout Band Door Anchor. 100% Guaranteed Replacement Warranty. FREE Exercise Band E-Book With Over 50 Full Page Workout Routines. Premium Heavy Duty Construction. Feel confident using a strong door anchor that will not give way or slip through the door. Extra large anchor. Easy to use as it is larger than most and your bands will slip through the loop easily. 100% Guaranteed Replacement Warranty. Buy with confidence. Free downloadable E-Book with over 50 exercise band routines.