Check the listing for details. Mac Tools 6529DIA SAE Hexagonal Die 5/16"-24 NF - 1" Shank. Condition: New other (see details), Made in China. Listed at 12.11 USD. New old stock. The Mac Tools 6529DIA SAE Hexagonal Die is a high-quality hand tool designed for automotive and industrial applications. Made by the reputable brand MAC, this single item die features a 5/16"-24 NF size and a 1" shank for easy use. Manufactured in China, this tool is perfect for threading and making precise connections in various vehicle parts and accessories. Its durable construction and precise measurements make it a valuable addition to any garage or workshop.