*KeyFeatures *Complete Linear Rail Kits: This linear rail set includes 2pcs 23.6 in / 600 mm long SBR16 rail shafts and 4pcs SBR16UU blocks. Sliding blocks are 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 are made of quality bearing steel with aluminum alloy housing. Surface chrome plating treatment makes it anti-rust, durable, and extremely hard. *Premier Linear Guiding System: A perfect combination of the central axle bearing rail and aluminum alloy support stabilizes the original rail nicely. In addition, a high-precision linear bearing is inside the industrial-grade standard SBR block. *Easy to Install: Conveniently install the linear rail by aligning the track with the mouth of the slide rail and pushing the slide rail until the slide rail completely falls. No need for maintenance. *Wide Application: The linear guide rail is widely used in 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 Rail Shafts: SBR16, 23.6 in / 600 mm Gross Weight: 8.8 lbs / 4 kg Package Dimensions: 25.2" x 3.9" x 3.5" / 64 x 10 x 9 cm ******************************************************************************************************* *Pakcage Content 2 x SBR16 600 mm Fully Supported Linear Rail Shafts 4 x SBR16UU Sliding Blocks