Greas-em Dry Graphite Lubricant 5.5 gram tube 1ea. This fine, dry graphite lubricant is specially selected for use with Kadee® Couplers & Trucks. 5.5 gram tube Also an excellent general purpose lubricant for use all around the layout to reduce friction in moving parts and bearing surfaces. Add a puff inside your couplers, move them back-and-forth a few times to burnish and enjoy smooth action of your couplers. WARNING: CHOKING HAZARD - Small Parts - Not for children under 14 years. Kadee Quality Products Co. products are not toys and are not intended for children under 14 years old.