What are the four lengths of the 4 tabs?

Thank you for your inquiry regarding this item from Prime-Line Products. The cams are 11/16 in on center from mounting post, 61/64 in. from center of mounting post, 1-3/16 in from center mounting post and 1-9/16 in from center mounting posts. For faster service, be sure to take advantage of the CHAT option located in the lower right-hand corner of your screen, where you can quickly connect to a representative for assistance. Otherwise, you can contact the manufacturer directly with your questions regarding this item, or any other product manufactured by Prime-Line Products by calling their toll free number at (877) 649-9740, or by contacting them by email at info@primeline.net