Liquid Bearings, The BEST 100%-synthetic oil for all Robotics, Provides Superior Lubrication, never gums up, also Inhibits Corrosion! 100%-synthetic lubricant, perfect for all robotics uses! Immediately begins to displace old petro-oils or sprays. Excellent corrosion prevention for any metal components Includes both 1/2" AND 1-1/2" needles, each with tip scabbard! Plastic-safe for all plastics and painted surfaces!