RiveryMFG
Large Spring Replacement
Large Spring Replacement
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Keep your Zero and Zero-G snapping into action like day one. This is the OEM-spec large replacement spring, precision-made to match the exact tension and dimensions of your knife's factory pivot spring. Over time, springs can weaken or fatigue with heavy use, this drop-in replacement restores crisp and confident deployment.
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The Zero Utility Knife
Born in Sevierville, Tennessee, the Zero Utility Knife embodies American craftsmanship and mechanical ingenuity. Designed by engineer Michael Sayers of Rivery Manufacturing, it reimagines the everyday utility knife with a seamless, screwless body and an addictive slide mechanism that feels like pure precision at work. Crafted in the USA with uncompromising attention to detail, the Zero Utility Knife is where innovation meets design.