Features:These linear rails and blocksare small in size andlightweight, especially suitable for small equipments.Adopting 4-point contact design, it canbear load from every direction, and has good strength and high accuracy.Designed with ball retainer, which allowsinterchangeability in the case of small precision.Blocks havelubrication system; lubrication oil canbe easily put into the oil inlet on the side.Widely used for automatic equipment,precision measuring equipment, and many other machines that need precisionlinear movement.Specifications:Model: LML12H (rail),MGN12H (block)Type: Slide railSlideTrack: Linear railLength: 400mm/15.7inMaterial: Bearing steelAccuracy Class: HBlock FixationMethod: LockedWeight: 673g(approx.)Package Includes:2 xLinear Guide Rails 2 x LinearGuideBlocks