21557 Metal Stud Punch Spring – Greenlee Electrical Tool Component The 21557 Metal Stud Punch Spring by Greenlee is a precision replacement component designed for use with Greenlee metal stud punches. It supports the operational mechanism of stud punches used in electrical and construction applications, ensuring reliable performance in punching holes through metal studs. This component is essential for electrical distributors and switchgear suppliers who require durable, high-quality parts for maintaining and servicing metal stud punching tools. Specifications Manufacturer: Greenlee Manufacturer Part #: 21557 Product Weight: 0.0400 lbs UPC: 783310215578 Features Designed specifically for Greenlee metal stud punches Supports consistent punching performance and tool longevity Compact and lightweight replacement spring component Downloads & Links Warranty Catalog