Irwin 3/4-16 X 1-13/16 In. Nf Hex Machine Screw Die (Hcs) This machine screw die is ideal for maintenance and repair work. It recommended for use with hexagon die stock. Die can be used with a wrench or socket when space is limited Comes carded Durable high speed steel construction 1-13/16 In. size across flat Features Die can be used with a wrench or socket when space is limited Recommended for use with hexagon die stock Usage: Maintenance and Repair Work Material: High Carbon Steel Diameter: 3/4 in.-16NF USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.