Features: Coupler for T8 shaft screws minimizes connection gaps, reduces friction, and enhances printing by compensating misaligned bed screws during operational. Featuring 22mm outer diameter and 16mm center distance between holes, this high torsional stiffness coupling protects bearings through precise manufacturing, ensuring minimal offset motion. Essential upgrade for printing enthusiasts and professional for requiring enhanced shaft stability. Optimizes print quality in fast speed printing scenarios by eliminating layer shifts caused by thermal bed wobble during prolonged printing. Engineered with brass construction, this industrial grade coupling maintains dimensional accuracy across thousands of printing hours while resisting wear from repetitive shaft movements. Specifications: Component:Metal Size:Approx.13.6mm/0.54inch Package Includes: 2 Optional Package: Package 1 Include:1Pc Coupling Coupler Package 2 Include:2Pcs Coupling Coupler note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.