... spheres designed to reduce down hole friction.Application & FeaturesLubricant Beads reduce torque and drag on the drill string, reduce ... a "ball bearing" effect in the well bore. Lubricant Beads are elastic, non-abrasive, environmentally safe and thermal stable ... with little or no effect on fluid properties. Lubricant Beads are available in coarse or fine sizes.Typical Specification............ ...