Features:These linear rails and blocks are small in size and lightweight, especially suitable for small equipments.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.Blocks have 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.Specifications:Model: LML12H (rail), MGN12H (block)Type: Slide railSlide Track: Linear railLength: 400mm/15.7inMaterial: Bearing steelAccuracy Class: HBlock Fixation Method: LockedWeight: 673g(approx.)Package Includes:2 x Linear Guide Rails2 x Linear Guide Blocks1These linear rails and blocks are small in size and lightweight, especially suitable for small equipments2Adopting 4-point contact design, it can bear load from every direction, and has good strength and high accuracy3Designed with ball retainer, which allows interchangeability in the case of small precision4Blocks have lubrication system; lubrication oil can be easily put into the oil inlet on the side5Widely used for automatic equipment, precision measuring equipment, and many other machines that need precision linear movement