*COMPLETE LINEAR RAIL KITS- This linear rail set includes 2 pieces of 600 mm/23.5" long SBR16 rail shafts and 4 SBR16UU blocks. Sliding blocks to be used cooperatively with rails, smooth sliding provided by the inside linear bearing. *HIGH-QUALITY STEEL MATERIAL- CNC parts linear rails are made of carbon steel, linear Bearings made of quality bearing steel with aluminum alloy housing. Surface chrome plating treatment beautiful anti-rust, high hardness, more durable. *PREMIER LINEAR GUIDING SYSTEM- Perfect combination of the main axle bearing rail and aluminum alloy support, which nicely stabilizes the original rail. Industrial-grade standard SBR block, with a high precision linear bearing inside. *EASY 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. *WIDE APPLICATION- The linear guide rail is widely used in the automation machinery such as DIY CNC routers, lathes, machine tools, bending machines, laser welding machines, etc. Also, applicable for large-scale transmission equipment, including industrial robots, cracker machines. ******************************************************************************************************* *Specifications Feature: Smooth motion Performance: Low noise Bearing Blocks: 4 pieces, SBR16UU Rail Shafts: SBR16, 600 mm (23.5") Gross Weight: 8.8 lb (4 kg) Package Dimensions: 25.2"* 3.9"* 3.5" (64* 10* 9 cm) ******************************************************************************************************* *Pakcage Content 2 X SBR16-600 mm/23.5" Linear Slide Guide Fully-supported Rails 4 X SBR16UU Bearing Blocks