This SPD-639 3/8" (M10) Square Punch & Die Set is the perfect tool for any job. It's designed to be highly durable and long lasting, so you can trust that your projects will get done quickly and efficiently. The set also includes a punch and die, which are made from high-quality steel and heat treated for extra strength. With this set, you can easily cut through any material with precision and accuracy. Call (803) 372-8831 with questions, or buy online for convenience.