This is a general purpose carriage for the MakerSlide linear rail. It has multiple mounting patterns for vertical and horizontal orientations. It can mount various wheel counts. It has several 20mm patterns that can be used to mount directly to MakerSlide or standard 20mm T-slot extrusions. There is also plenty of area for further customization. It is made out of strong 1/8" thick clear anodized 6061-T6 aluminum. The price is for the plate only. The other items are shown for reference only.