Lubrication system: The block is equipped with a lubrication system;lubricating oil can be easily introduced into the oil inlet on the side.It provides a new and different feeling of use.Good strength: Adopting 4 contact points design, it can bear load in all directions, and has good strength and high precision.It can be used with peace of mind.Designed with ball retainer: Designed with ball retainer, which allows interchangeability in the case of small precisionLubrication system: Block has lubrication system;lubrication oil can be easily put into the oil inlet on the side.Bring you a new and different using feelingApplication: Widely used for automatic equipment, precision measuring equipment and many other machines requiring precision linear motion.