Solid V Wheel Kit Aluminium

I'm looking for wheels for T slot aluminium extrusion Found these thing:1714686 and

: v slot wheels 3DINNOVATIONS Cube Corner Connector Three Way Cube Corner Prism Connector Adjustable Wheel Bracket Openbuilds for VT-Slot 20-20

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the lucky pub slot Additionally, the chamfered edges provide races for V-wheels to run on in linear motion assemblies goBILDA® goRAIL 1109 Series goRAIL goBILDA goRAIL 1118