COMPLETE LINEAR RAIL : Two 500 mm/19.68 long SBR20 rail shafts, and 4 SBR20UU blocks are included in the package. Smooth sliding blocks moving freely and fastly PERFECT SLIDEING SYSTEM: With industrial-grade standard SBR block and a high precision linear bearing inside, the original rail set can be stabilized by rail axle bearing rail and aluminum alloy support HIGH QUALITY MATERIAL: The linear rail made of good quality steel and aluminum alloy Surface chrome plating treatment to be anti-rust, high hardness and more durable EFFORTLESS TO INSTALL: Aluminum alloy 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. 4 pieces SBR20UU Bearing Blocks afforded VARIOUS USES: The linear rails apply for large-scale transmission equipment including industrial robots, cracker machines, supersonic cleaning equipments, solar energy and clothing supporting devices, etc Features:
Complete Linear Rial Kits
High-quality Steel Material
Premier Linear Guiding Syste
Easy to Install


Specifications:
Feature: Smooth motion
Performance: Low noise
Condition: 100% brand new
Bearing Blocks: 4 pieces, SBR20UU
Rail Shafts: SBR20, 500 mm (19.68")


Package Content:
2 X SBR20-500 mm Linear Slide Guide Fully-supported Rails
4 X SBR20UU Bearing Blocks