Hornady Shell Holder No. 55. The Number 55 Shell Holder by Hornady is made from quality steel that has been treated with heat to ensure your shell holder will last as long as your press. This piece of Hornady Gunsmith and Reloading Equipment can be used with many brands of reloading presses. This Gunsmith and Reloading Equipment is critical gear for any hand-loader. Specifications for Hornady Shell Holder Number 55 390610: Material: Heat-Treated Steel Weight: .30 lbs Dia: .474 Features of Hornady Number 55 Holder for Shells 390610: Works with any Hornady accessory Made from heat-treated steel Package Contents: Hornady Shell Holder Number 55 390610 Hornady Shell Holder Number 55