3-IN-ONE

3-IN-ONE has been a hardware-store fixture since 1894, decades before the WD-40 archetype it now lives alongside. The brand built its identity on one product — the original 3-IN-ONE Multi-Purpose Oil — sold in a squeeze bottle with a precision drip spout designed to deliver a controlled bead of oil onto hinges, locks, sewing machines, bicycles, and small tools. WD-40 Company acquired the brand in 1995 and folded it in as the non-aerosol counterpart to the WD-40 lubricant family.

The lineup today extends beyond the original drip oil to include specialized formulations (garage door lube, lock dry lube, motor oil, pneumatic tool oil, professional silicone spray). The core differentiator from the aerosol WD-40 line is form factor — most 3-IN-ONE products dispense as drips or low-pressure sprays, which eliminates propellant VOC burden and aerosol inhalation risk that defines the aerosol category. SDS documents are hosted on the brand's own site at 3InOne.com.