✓ 100% SATISFACTION GUARANTEED: Blades are manufactured in the USA. FREE Fast Shipping Within the USA. Your satisfaction is our priority, we are committed to providing high-quality cartridge set. In case you have any issues, feel free to contact us. ✓ SAVES TIME & MONEY: Most customers report reducing their shaving time by 75% & many shave their heads in less than a minute. Instead of buying expensive shaving cartridges every week, OmniShaver’s replacement razor blades exponentially extend the useful time by self-polishing or "strop" its blade edges during use. ✓ DOUBLE THE NUMBER OF SHAVES: Cleverly designed with safety in mind, our disposable razor cartridges use your skin as a "strop" to self-straighten and polish its blades' edges during use. Far outlasts any shaver on the market! If properly maintained and used, Omnishaver’s replacement razor will provide at least twice the number of shaves other shavers or razors can provide. ✓ THE ONLY ONE THAT SELF CLEANS DURING USE: Say goodbye to clogged razors during use, you won’t need to rinse your razor replacement blades underwater during use. Safety razor cartridges are not only heavier, but it transfers captured heat to the skin’s surface as the shave takes place. Once it is warmed up from the hot water, it will retain the heat throughout the shave which provides a soothing feel to the skin. ✓ BLADE REFILLS: Our replacement OmniShaver blade cartridge package includes 4 shaving cartridges and 1 cartridge replacement tool. This cartridge kit is best designed to fit our new generation "Silver Arrow" Premium OmniShaver which has our most recently modified cartridge locks.