1、APPLICABLE MODELS: Suitable for Ender 3, for Ender 3 V2, for Ender 3 Pro and other similar structure models, the print size is 220x220x250mm 2、ALUMINUM ALLOY BLOCKS FOR FIX：The length of the single rod is 36.5cm, and the two sides are connected by aluminum alloy fixing blocks, which enhances the Z axes stability of the 3D printer 3、SOLVE JITTER PROBLEM：The boom group effectively solves the Z axes jitter problem of the aluminum profile structure 3D printer and improves the printing effect 4、CORROSION RESISTANT STAINLESS STEEL: Also adopt stainless steel materials, possess corrosion resistance, good mechanical properties, high strength 5、COMPLETE ACCESSORIES: Supporting rod set equipped with screws, nuts, 2 kinds of wrenches, convenient for your installation 2 x Pull Rod4 x Connector16 x Screw12 x Nut1 x Hex Wrench1 x Wrench1 x User Manual Item Type: Supporting Rod SetColor: BlackProduct Material: Aluminum alloy, stainless steelPull Rod Length: Approx. 36.5cm / 14.4inApplicable Models: For Ender 3, for Ender 3 V2, for Ender 3 Pro and other similar structure models, the print size is approx. 220 x 220 x 250mm / 8.66 x 8.66 x 9.84in