Crafted with precision, the Hamilton Steel Main Spring is designed to ensure your timepiece operates with the unmatched performance it was built for. Compatible with the Hamilton 3328 model, this mainspring is a vital component for watch enthusiasts looking to maintain or restore their vintage timekeeper. Blue in hue and fashioned from durable steel, this mainspring embodies the quality craftsmanship synonymous with the Hamilton brand. Proudly made in the United States, it's a testament to the enduring legacy and expertise in watchmaking. Whether you're a collector or a watch repair professional, this mainspring is an essential part of keeping your Hamilton watch ticking with accuracy.