Cc 2pcs ASSEMBLY INSTRUCTIONS PF20201 M6*20 X 8pcs M6*35 W 10pcs Dd 2pcs Ee 1pc 1 Bb 2pcs 2 W W Y 1pc Z 8pcs Dd Cc Cc Dd 3 Ee X Z Bb ASSEMBLY TIPS: Please use the hardware and accessories included in the set. DO NOT use other electrical or manual tools.In order to facilitate the assembly and make your final product firm and stable, please tighten by a few rounds each screw one by one.After all screws are connected, then you start to tighten each screw to the end.