Features: _x000D_ These linear rails and blocks are small in size and lightweight, especially suitable for small equipments. _x000D_ Adopting 4-point contact design, it can bear load from every direction, and has good strength and high accuracy. _x000D_ Designed with ball retainer, which allows interchangeability in the case of small precision. _x000D_ Blocks have lubrication system; lubrication oil can be easily put into the oil inlet on the side. _x000D_ Widely used for automatic equipment, precision measuring equipment, and many other machines that need precision linear movement. _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Model: LML12H (rail), MGN12H (block) _x000D_ Type: Slide rail _x000D_ Slide Track: Linear rail _x000D_ Length: 400mm/15.7in_x000D_ _x000D_ Material: Bearing steel_x000D_ Accuracy Class: H_x000D_ Block Fixation Method: Locked_x000D_ Weight: 673g(approx.) _x000D_ _x000D_ _x000D_ Package Includes: _x000D_ 2 x Linear Guide Rails _x000D_ 2 x Linear Guide Blocks