Liquid Bearings, superior 100%-synthetic oil for swingsets and all back yard gym equipment, never gums up, frees rusty and sticky mechanisms, immediately quiets annoying squeaky swings!! THE BEST oil for your outdoor play equipment Keeps working for long periods, even after rain No petroleum-based odor, never gets sticky or gummy Plastic-safe for all materials and painted surfaces! This offer also includes the 1/2" AND 1-1/2" needles