Features:_x000D_ _x000D_ Professional and technical rail and block, strong and durable. _x000D_ Adopting 4-point contact design, it can bear load from every direction, and has good strength and high accuracy. _x000D_ Designed with ball retainer, which allows interchangeability in the case of small precision. _x000D_ Block has lubrication system, lubrication oil can be easily put into the oil inlet on the side. _x000D_ Widely used for automatic equipment, precision measuring equipment, and many other machines that need precision linear movement. _x000D_ _x000D_ Specification:_x000D_ Model: HGR20_x000D_ Type: Slide rail_x000D_ Slide Track: Linear rail_x000D_ Length: 400mm/15.7inch_x000D_ Width: 15mm/0.6inch_x000D_ Rated Static Load: 25.31 kn_x000D_ Fixed Bolt Size: M4 x 16mm_x000D_ Material: Bearing steel_x000D_ Static Moment: 0.17 kn*m_x000D_ Number of slider: 2_x000D_ Weight: 2740g / 96.7oz(approx.)_x000D_ _x000D_ Package List:_x000D_ 1 x Linear Guide Rail_x000D_ 2 x Linear Guide Block