Check the listing for details. Penn Union TDM-250 Dieless Mechanical Compression Tool. Condition: Used. Listed at 189.99 USD. The TDM-250 Hand-Operated Dieless Mechanical Compression Tool is a versatile crimper designed for use in various industrial applications. With its efficient hand operation, this tool offers precise and reliable compression without the need for dies. This compact and lightweight tool is ideal for crimping a variety of electrical and mechanical components, making it a valuable addition to any workshop or job site. Its durable construction and easy operation make it a must-have for professionals in the business and industrial sectors.