[Durable Material]Compared with the market acrylic filament spool holder, metal aluminum frame is dust proof, durable, practical. [Anti ]Stable and durable foot pads to increase stability and prevent the bracket from moving during work. The drawing material slides smoothly to avoid the occurrence of stuck filament winding on the wire disk. [Width Adjustable]Adjustable width (33mm-77mm) for different filament spool. [Flexible]According to the volume of the consumable filament, the range of the material frame can be adjusted to more flexible. Colour:Black Material:aluminum Package Contents: 2 x Filament Spool Board 4 x Bearings 4 x Foot Pad 4 x Screws 4 x Small Screws 1 x Spanne Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.