1 T- slot cover prevent accumulation of dirt and debris in the T-slot. It also can decorate the aluminium extrusion.
we have slot 6 slot8 slot 10. The material is extrude plastic: PVC PP TPE .NBR .
2 we have resonable price, because China is where it is made the cheap. we have factory and pass Europe ROHS and ISO9001/9000.
3 if you want ,we can send a catalogue and price list to you as a reference.
4 our product picture are in the attachment, thanks to check.