GT2-16T Pulley (5mm Bore / 16 TOOTH / 6mm BELT)

Preset-Nut AKA Slide-In Nut for 20mm T and V-slot profiles. 

Tactile Switch Panel PCB Mount Momentary tactile Switch Push Button for Arduino 6x6x5mm (Pack of 4 Pcs)

16 Teeth pully for a GT2-6mm belt with a 3mm bore ( Typically...

GT2 6mm Belt Idler Pulley 16Teeth GT2 3mm Bore with bearing insert

Beam Photoelectric Sensor Electric Counter Module

Preset-Nut AKA Slide-In Nut For all 20mm Profiles. Fits V-Slot and T-Slot profiles.

T-Nut (or T Nut) made for easy assembly of products that uses 20mm x 20mm V-slot aluminium extrusions.

Nylon Edge Bearing 5mm x 23mm x 7MM White