*KeyFeatures *【HGR15-1200 mm LINEAR GUIDE RAIL】- This linear guide rail set includes 2 pieces of 1200 mm/47.2" long HGH20 rail shafts and 4 bearing pillow blocks. *【HIGH-QUALITY STEEL MATERIAL】- Linear bearing rails made of quality bearing steel. Beautiful and anti-rust surface treatment ensures durability, high hardness, and stiffness. *【PREMIER LINEAR GUIDING SYSTEM】- Helps to build economical linear guiding system and designed to achieve high precision linear motion, low friction coefficient. 4 bearing pillow blocks with smooth sliding *【EASY 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, less effort for maintenance. *【WIDE APPLICATION】- Grinding machine, milling machines, lathes, drilling machine, and comprehensive processing machines, discharge manufacturing machine, boring machine, line cutting machine, precise measurement instrument, woodworking machinery, handling machine, and the shipping device. *Cautions *Please handle the product gently to avoid influences to its precision. *Block is not allowed to detach from the rail or push back while over stroke. ******************************************************************************************************* *Specifications Type: Linear Actuator Feature: Smooth motion Performance: Low noise Material: Steel Bearing Blocks: 4 pieces Rail Shafts: HGH20, 1200 mm (47.2") Gross Weight: 16.6 lb (7.6 kg) Package Dimensions (L* W* H): 49.2"* 3.5"* 3.1" (125* 9* 8 cm) ******************************************************************************************************* *Pakcage Content 2 X Linear Rails HGH20-1200 mm 4 X Bearing Pillow Blocks