Check the listing for details. Rivery MFG Zero Smooth OP Black Utility knife. Color: Black, Condition: New. Listed at 60.00 USD. Discover the Zero Smooth Operator Pattern-6061 Aluminum Utility Knife with Lanyard Hole, a premium, American-made tool engineered for precision and addictive tactile satisfaction. Crafted from lightweight 6061 aluminum with a sleek satin anodized finish, this retractable utility knife features a unique Smooth Operator design, available in multiple vibrant colors. Its robust key and spring mechanism deliver a satisfying click and clack that’s hard to resist. Order now for the ultimate retractable utility knife tactile experience. Perfect for professionals and EDC enthusiasts, the Zero utility knife combines portability with a responsive action feel. The machined lanyard hole adds versatility, allowing easy attachment to your gear. Designed and assembled in East Tennessee.