Professional and technical rail and block, strong and durable Adopting 4-point contact design, it can bear load from all directions, and has good strength and high accuracy Designed with ball retainer , which allows interchangeability in the case of small precision The block has a lubrication system, the lubricating oil can be easily put into the oil inlet on the side Small and light, suitable to most automatic equipment Feature: Professional and technical rail and block, strong and durable.Adopting 4-point contact design, it can bear load in all directions and has good strength and high precision.Designed with a ball retainer, which allows interchangeability in the case of small precision.The block has a lubricating system, the lubricating oil can be easily introduced into the inlet of oil on the side.Small and l lightweight, suitable for most automatic equipment. Specification: Rail Model: MGN9B Type: Slide Slide: Linear Rail Rail Length: 150mm/5.9in Rail width: 9mm/0.4in Material: bearing steel Number of sliders: 2 Sliding block model: MGN9B Mode sliding block fixed: locking type Weight: approx. 93g/3.3oz Package List: 1 x MGN9B Linear Guide Rail 2 x MGN9B Linear Guide Block