MGN9B Mini Linear Rail Guide, 150mm Sliding Gide with 2pcs Block for DIY Printer and CNC Machine

MGN12H Mini Linear Rail Guide: Professional and technical rail and Block, strong and High Precision: Adopting 4-point contact design, it can bear load from every direction, and has good strength and high accuracy Compact Design: Designed with ball retainer, which allows interchangeability in the case of small precision Lubrication System: Block has lubrication system, lubrication oil can be easily put into the oil inlet on the side Application: Tiny and light weight, suitable for most automatic equipment