The 3-blade H-3-11/32" & H-3-5/16" shown in the 1958 Bear Catalog, and the H-35 & H-311 heads in the 1959 Bear Catalog were made by Hi-Precision in Iowa. Ten different models are shown on pages H-19 & H-20 in "Broadheads 1871-1971, Identification and Rarity Guide, Second Edition". Other 3 blades were sold but not made by Bear, e.g., Hills Hornet, Bod-Kin.