Liquid Bearings, SUPERIOR plastic-safe synthetic oil for Airsoft rifles, makes for faster rapid-firing and more reliable weapons!! 100%-synthetic lubricant, perfect for all Airsoft guns! Immediately begins to displace old petro-oils or sprays. Makes sluggish mechanisms much quieter and smoother! Rapid-fire weapons work more reliably, no jamming! Includes both 1/2" AND 1-1/2" needles, each with tip scabbard!