Grease fittings, also known as lubrication nipples or Zerk fittings, are essential small components in mechanical systems used to apply lubricants (such as grease or oil) to bearings and other moving parts. Different types of grease fittings are designed for specific applications to ensure the proper operation and longevity of https://isohitech.com/understanding-different-types-of-grease-fittings/