Specification Brand : Wisoqu BulletPoint1 : This linear rail and block are small in size and lightweight, especially suitable for small equipments. BulletPoint2 : Adopting 4-point design, it can bear load from every direction, and has good strength and high accuracy. BulletPoint3 : Designed with ball retainer, which allows interchangeability in the case of small . BulletPoint4 : Block has lubrication system; lubrication oil can be easily put into the oil inlet on the side. BulletPoint5 : Widely used for automatic equipment, measuring equipment, and many other machines that need linear movement. Color : #872 IncludedComponents : No ItemName : Miniature Linear Rail Rail, MGN12 Mini Linear Rail, 550mm Linear Sliding Door Gide 12mm Width with Two MGN12C Carriage Block for DIY 3D Printer, CNC Machine Etc ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 57 centimeters ItemPackageDimensions_Width : 3 centimeters ItemTypeKeyword : slide-rails Manufacturer : Wisoqu ModelName : Wisoqugs2dm1ocyg ModelNumber : Wisoqugs2dm1ocyg NumberOfItems : 1 PartNumber : Wisoqugs2dm1ocyg ProductDescription : Features:This linear rail and block are small in size and lightweight, especially suitable for small equipments.Adopting 4-point 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 .Block has lubrication system; lubrication oil can be easily put into the oil inlet on the side.Widely used for automatic equipment, measuring equipment, and many other machines that need linear movement.