1Accuracy Crafted: Our cross slider coupling, made of brass with CNC machining, minimizes friction and provides high strength, ensuring minimal connection spaces and low inertia movement. 2Enhanced Printing Quality: Designed to eliminate heat bed oscillation issues during the printing process, reducing the impact of screw rod clearance on printing quality. 3Universal Compatibility: Compatible with for VzBot 3D printer, for BLV 3D printer, and other 3D printers with T8 screw rod Z axes, featuring 16mm center distance mounting hole nut for smoothly performance. 4Accurate Measurements: With a 22mm outer diameter and 16mm center distance between two holes, please measure your screw rod nut mounting hole distance carefully before purchasing. 5Superior Twisting Stiffness: Defend your drive components and support bearings from the effects of large radial misalignment, ensuring smoothly and reliable performance. 2 x Coupler 8 x Screw 8 x Nut