Features: Professional and technical rail and block, strong and durable. Adopting 4-point contact design, it can bear load from every direction, and has good strength and high accuracy. Designed with ball retainer, which allows interchangeability in the case of small precision. Block has lubrication system, lubrication oil can be easily put into the oil inlet on the side. Widely used for automatic equipment, precision measuring equipment, and many other machines that need precision linear movement. Specification: Model: LML9B Type: Slide rail Slide Track: Linear rail Material: Bearing Steel Length: 600mm/23.6inch Width: 9mm/0.3inch Number of sliding block: 2 Sliding block fixation: Locking type Weight: 252g / 8.9oz(approx.) Package List: 1 x Linear Guide Rail 2 x Linear Guide Block 1、Professional and technical rail and block, strong and durable 2、Adopting 4-point contact design, it can bear load from every direction, and has good strength and high accuracy 3、Designed with ball retainer, which allows interchangeability in the case of small precision 4、Block has lubrication system, lubrication oil can be easily put into the oil inlet on the side 5、Widely used for automatic equipment, precision measuring equipment, and many other machines that need precision linear movement