*KeyFeatures *1500 mm HGR20 Linear Guide Rail: This linear guide rail set includes 2 pieces of HGR20-1500 mm linear guide rail, 4 blocks, 1pcs anti-reverse RM1605-1500 mm ballscrew, 1pcs ball nut, 1pcs BF12 / BK12 nut, and 1pcs 6.35 x10 mm 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. ******************************************************************************************************* *Specifications Type: HGR20 Slide Rail Material: Gcr15 Steel Rail Shaft Length: 59 in / 1500 mm Nuts: BF12 / BK12 Nuts Fixing Screw Hole Size: M4 x 16 mm Static Load Ratings: 25.31 Allowable Static Torque: 0.17 KN.m Performance: Smooth Motion, Low Noise Net Weight: 18 lbs / 8 kg Block Dimensions(L x W x H) : 2.8 x 1.6 x 1.3 in / 7.3 x 4.2 x 3.4 cm ******************************************************************************************************* *Pakcage Content 2 x HGR20-1500 mm Linear Guide Rails 4 x Slide Blocks 1 x RM1605-1500 mm Ballscrew 1 x Ball Nut 1 x BF12 / BK12 Nut 1 x Plum Coupling