Kadee 231 Greas-em Dry Graphite Lubricant 3/16oz (5.5g) NIB

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. This fine, dry graphite lubricant is specially selected for use with Kadee(R) couplers & trucks.