300mm MGN9 Linear Rail Guide with MGN9H Carriage Block for 3D Printer and CNC Machine 300mm Rail + MGN9H electronics_new_releases_Aug2023 turn the green wheel in

turn the green wheel in the direction of arrow on the tape to tighten the carbon ribbon

Satin Brass Finish

just plug to 12V DC power and it will produce beautiful effect

please choose this amysports barrel fishing swivel

8 lighting modes: combination

300mm MGN9 Linear Rail Guide with MGN9H Carriage Block for 3D Printer and CNC Machine 300mm Rail + MGN9H electronics_new_releases_Aug2023 turn the green wheel in300mm MGN9 Linear Rail Guide with MGN9H Carriage Block for 3D Printer and CNC Machine Packing list: 1 300mm MGN9 linear rail 1 MGN9H carriage block Product Features There are 2 red rubber stoppers to keep the block on the rail Come with 2 spare balls in the package for backup