Great for small game, Vistas Rubber Blunts slide over the arrow shaft so you can quickly and easily swap them out for broadheads or field points. Blunts are to be use by themselves, screw off field point or broadhead and slide blunt to the insert. Per 6. Sizes: 5/16, 100 gr. fits most carbon arrows 11/32, 125 gr. fits most aluminum and cedar arrowsCancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Blunt Points.