Description Features: For Voron Ender-5 PLUS Tronxy Zonestar 3D printer accessories profile device isolation column.. Made of high quality steel,durable to use,corrosion resistant,high strength and hardness. Hexagonal eccentric column allows up to 0.79mm of adjustment. Used with V-Shape aluminum extrusion and V-wheels to create linear motion systems. Package Includes10PCS Hexagonal Eccentric Column, 20PCS Round Column with a 10mm wrench. Package Includes: 1 Set Eccentric Columns ( 10PCS Hexagonal Eccentric Column; 20PCS Round Column) Specifications: Style: Eccentric Column 8mm Height Hexagonal Eccentric Column Size :Outer diameter 10mm hex,inner diameter 5mm, height 8mm Round Column Size :Approx Outer Diameter 8mm Hex, Inner Diameter 5.2mm, Height 8mm Color :Silver Material:High Quality Steel Weight:68g note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.