Lyman Brass Smith Die Wrench Silver. This includes the 1'' lock nuts used on our Pro dies as well as Dillon dies. Made of rust resistant stainless steel the closed end design offers added strength with thinner side walls allowing easier fit between dies Specifications for Lyman Brass Smith Die Wrench: Manufacturer: Lyman Color: Silver Features of Lyman Brass Smith Die Wrench 5 openings accommodate the following size nuts: 1 3/16'' Lyman and RCBS hex style die lock nuts; 1'' Lyman Pro and Dillon hex die lock nuts; 3/4'' Lyman expander plug lock nuts; 5/8'' Lyman seating screw lock nuts; 3/8'' Lyman decapping rod lock nuts Package Contents: Lyman Brass Smith Die Wrench Lyman 7631250: Brass Smith Die Wrench Silver