This Brother Bobbincase XC3153351 should be used for general sewing stitches on your combination machine. Use it for straight-stitch or zig-zag etc. The green dot on the tension screw is added at the factory. They set the tension to a factory setting. It shouldn’t be adjusted. Will it Fit Your Brother Combination Model, NX2200 QC1000 NV2200 NV1500 NV1500D NV5000 NV4000 NV4000D
