Overview Reviews Product Description TAG Heuer screw down crown for Formula 1 CAH1010, CAH1110 Diameter 7.8mm Stem thread 0.90mm Product Videos Custom Field Product Reviews Write a Review Write a Review × Tag Hauer Screw crown and tube fits TAG Heuer Formula 1 CAH1110 CAH1010 CAH1112 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *