【Type】-- European 2020T; Material:6063 aluminum. The T-slot has smooth edges. | 【Ideal for 3D printer and CNC build】-- 2020 Aluminum extruded profile are a good linear motion material with high strength and adjustable. It can be fixed on the side of 4 grooves such as M3, M4, M5 T-slot nut and pulley. | 【Premium Quality】-- Made of aluminum 6063; Up to European standard;the surface is anodized, making the surface smoother and cleaner. | 【Applications】-- Compatible with all 20 series fasteners and accessories;Suitable for 3D printer, CNC build, workbenches, lasers, brackets, furniture, fitness equipment, precision printers, automatic cutting machines, etc; Applied in science, electronics, labs, home technology projects, displays/exhibitions, robotics, etc. | 【What's Included】-- 4/8/12 Pieces 20mm*20mm Diameter 150/200/250/300/400/500/600/700/800/1000/1220/1500/2000mm Anodized Linear Rail to choose from ;30-Days money back guarantee, 1-Year warranty, 24/7 friendly customer service.

【Type】-- European 2040V; Material:6063-T5 aluminum. The T-slot has smooth edges. | 【Ideal for 3D printer and CNC build】--2040 Aluminum extruded profile are a good linear motion material with high strength and adjustable. 2040 V Type aluminum extrusion profile also fits T nuts. | 【Premium Quality】--Made of aluminum 6063-T5; Up to European standard;the surface is anodized, making the surface smoother and cleaner. | 【Applications】-- Aluminum extrusion European standard can be used for automation equipment, professional 3D printers, workbenches, lasers, display racks, furniture, frame construction of fitness equipment, etc. | 【What's Included】-- 4/8/12 Pieces, 20mm*20mm Diameter, 150/200/250/300/400/500/600/700/800/1000/1220/1500/2000mm, Black/Silver Anodized Linear Rail to choose from ;30-Days money back guarantee, 1-Year warranty, 24/7 friendly customer service.