*KeyFeatures *Complete Linear Rail Kits: This set includes supported linear rails SBR20-300/600/1000 mm rails, two for each type, 3pcs of ball screws RM1605-350/650/1050 mm-C7, 3 sets of BK/BF12, and 3pcs of couplings 6.35 mm*10 mm. *High-Quality Steel Material: Linear guides are made of quality material. The ball screw with high efficiency and low heat generation can ensure accurate micro feed and get a higher rigidity. *Premier Linear Guiding System: Complete sliding unit's system with high accuracy and can be moved without deflection. There is a lot of ball rolling motion between the screw shaft and nut. Therefore, it is possible to obtain a high efficiency of movement. *Easy to Install: Quality support rail with pre-drilled holes for ease of mounting. The ball screw movement achieves high-speed feed. Convenient to install it, less effort to maintain. *Wide Application: The linear guide rail is widely used in CNC Router / CNC Grinding machines, industrial machinery printing, paper-processing, automatic machine, X-Y table, factory automation equipment, etc. ******************************************************************************************************* *Specifications Linear Guide SBR20 Length: 11.8/23.6/39.4 in (300/600/1000 mm) Ballscrew Length: 14.8/25.6/41.3 in (350/650/1050 mm) Class: C7 Screw Diameter: 0.63 in / 16 mm Screw Pitch (Lead): 0.197 in / 5 mm Screw Length: 7.87 in / 200 mm Feature: Anti-friction Packing Size: 44 x 8 x 4 in / 110 x 20 x 10 cm G.W.: 44 lbs / 20 kg ******************************************************************************************************* *Pakcage Content 2 x SBR20-300mm Linear Rail Guide 2 x SBR20-600mm Linear Rail Guide 2 x SBR20-1000mm Linear Rail Guide 1 x Ballscrew SFU / RM 1605-350mm- C7 with End Machined 1 x Ballscrew SFU / RM 1605-650mm - C7 with End Machined 1 x Ballscrew SFU / RM 1605-1050mm- C7 with End Machined 12 x SBR20UU Linear Blocks 3 x BK/BF 12 Support for Ballscrew 3 x 6.35x10mm-25x30mm Flexible Couplings