Double Z structure with lead screw kit to more stability and accuracy for your 3D printerIt is the perfect solution to avoid X-gantry shakingThe direct drive system runs smoothly. Two lead screws are connected electronically through a splitter cable, eliminating the need for beltsEasy to install, no welding or other modifications to your 3D printerType: 3D printer upgrade kitcolour:Black+silverMaterial:Metal + plasticPackage Contents:1 x 42-34 2 x Lead Screw Guide1 set Supply Holder1 x Coupler1 x Z Axis Lead Screw Bracket with Brass Nut1 x Dual Z Stepper Cable1 x Z Motor Bracket with screws and t-nuts1 x 365mm T8 Lead Screw1 set x Matching all screws and toolsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.