#8 0.61mm x 45.0mm#9 0.56mm x 42.4mm#10 0.46mm x 40.5mm6 pcs. per pack Superior Polished Finish. Flexible and warp resistant. Runs smoothly through cloth. Manufactured by Tulip Company Limited. Warning: This product should be used for sewing purposes only. Please keep out of reach of small children. minimum 1 box