1This linear rail and block are small in size and lightweight, especially suitable for small equipment. 2Adopting 4-point contact design, it can bear load from every direction, and has good strength and high accuracy. 3Designed with ball retainer, which allows interchangeability in the case of small precision. 4Block has lubrication system; lubrication oil can be easily put into the oil inlet on the side. 5Widely used for automatic equipment, precision measuring equipment, and many other machines that need precision linear movement.Features: This linear rail and block are small in size andlightweight, especially suitable for small equipment. 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. Block has lubrication 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. Specification: Model: MGN9HSlide Track: Linear rail Rail Length: 100mm / 3.94in RailWidth: 9mm / 0.35in Block Width: 20mm / 0.79inBlock Thickness: 8mm / 0.31inOverall Thickness: 10mm / 0.39in Material: Bearing steel Weight: 64g / 2.3oz (approx.) Package list: 1 * Linear Guide Rail 1 * Linear Guide Block