Specifications:
Bottom Outer Diameter of Spinner: 1.5 inch/38mm
Core for Shaft: 10mm
Large End Diameter of Nut: 1/4 inch-28
Small End Diameter of Nut: M4
Height of Nut: 16mm
Outer Diameter of Bush: 10mm
Inner Diameter of Bush: 6.4mm
Screw: M4x20