1.Various specifications: come with 5 different sizes for your choices, 300 x 5 x 1.0 mm, 206 x 5 x 0.6 mm, 172 x 5 x 0.6 mm, 150 x 4 x 0.9 mm, 128 x 5 x 0.6 mm, fit for most kinds of belt-driven recorder and fit for your demands well.; 2.What you will receive: one package includes 10 pieces of machine recorder turntable belts in 5 sizes, each size has 2 pieces, sufficient quantity for meeting your recorder belt repair and replacement demands