Features APPLICABLE MODELS: Suitable for Ender 3, for Ender 3 V2, for Ender 3 Pro and other similar structure models, the print size is 220x220x250mm 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 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 CORROSION RESISTANT STAINLESS STEEL: Also adopt stainless steel materials, possess corrosion resistance, good mechanical properties, high strength COMPLETE ACCESSORIES: Supporting rod set equipped with screws, nuts, 2 kinds of wrenches, convenient for your installation Specification: Item Type: Supporting Rod Set Color: Black Product Material: Aluminum alloy, stainless steel Pull Rod Length: Approx. 36.5cm / 14.4in Applicable 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 Package List:2 x Pull Rod4 x Connector16 x Screw12 x Nut1 x Hex Wrench1 x Wrench1 x User Manual Package List 2 x Pull Rod 4 x Connector 16 x Screw 12 x Nut 1 x Hex Wrench 1 x Wrench 1 x User Manual