Liquid Bearings, 100%-synthetic oil for roller skates, makes them FASTER!! also quieter and smoother, prevents rust when bearings get wet! 100%-synthetic lubricant, perfect for all skates! Immediately begins to displace old petro-oils or sprays. Makes sluggish bearings much quieter and smoother! Includes both 1/2" AND 1-1/2" needles, each with tip scabbard! Superior corrosion and rust prevention for your wheels!