VEVOR Linear Guide Rail 2Pcs HGR20-700mm Linear Slide Rail with 1Pcs RM1605-700mm Ballscrew with BF12/BK12 Kit Linear Slide Rail Guide Rail Square for DIY CNC Routers Lathes Mills

700 mm HGR20 Linear Guide Rail: This linear guide rail set includes 2 pieces of HGR20-700 mm linear guide rail, 4 blocks, 1pcs RM1605-700 mm ballscrew, 1pcs ball nut, 1pcs BF12/BK12 nut, and 1pcs plum coupling.,High-Quality Steel Material: Linear guides are made of carbon steel, linear bearings are made of GCr15 bearing steel. Surface chrome plating treatment beautiful anti-rust, hardness can as high as HRC62, more durable.,Premier Linear Guiding System: Motor-driven guide rail achieves high precision linear motion. They are designed to achieve high precision linear motion and low friction coefficient.,Effortless to Install: Steel support rail with pre-drilled holes for ease of mounting. Stainless steel Linear optical axis guide bearings linear movement. Easy to install, no need for maintenance.,Versatile Application: The CNC linear rail is widely used in automatic equipment, precision measuring equipment, and many other machines that need precision linear movement.