Liquid Bearings, the superior 100%-synthetic oil for air purifier and air conditioner fans, frees rusty and sticky mechanisms, quiets noisy fans, never becomes gummy, the BEST for electric fans of all types! THE BEST oil for all fans on air purifiers and conditioners 100%-synthetic lubricant, superior for all fan uses No petroleum-based odor, never gets sticky or gummy Plastic-safe for all materials and painted surfaces! Includes both 1/2" AND 1-1/2" needles, each with tip scabbard!