Compatible Models: This filament detector kit is compatible with for -5 S1, for K1 Max, for K1, for Sermoon D3, for -200B Pro 3D printers. Easy Install: for filament sensorkit, easy to install and use. The hole position is precise, the filament feeding is smooth, and it is made of high-quality materials, which not affect the feeding of the extruder. Sensitive: The built-in sensor is sensitive and can accurately detect the condition of the filament. Color: Black Material: ABS Package Contents: 1 * Filament exhaust sensor for K1 Only the above package content, other products are not included. Note: Light reflection 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.