Features 100% brand new and high quality. It is corrosion resistant, not easy to rust. It is durable and has a long service life. It is complete in specification, and can be applied in various working situations. With standard processing, it can be used as perfect fastener. Features:100% brand new and high quality.It is corrosion resistant, not easy to rust.It is durable and has a long service life.It is complete in specification, and can be applied in various working situations.With standard processing, it can be used as perfect fastener. Specification:Condition: 100% Brand NewSize:Specification3 * 3 * 8mm / 0.1 * 0.1 * 0.3in3 * 3 * 10mm / 0.1 * 0.1 * 0.4in3 * 3 * 12mm / 0.1 * 0.1 * 0.5in3 * 3 * 16mm / 0.1 * 0.1 * 0.6inQuantity10pcs10pcs10pcs10pcsSpecification4 * 4 * 10mm / 0.2 * 0.2 * 0.4in4 * 4 * 12mm / 0.2 * 0.2 * 0.5in4 * 4 * 16mm / 0.2 * 0.2 * 0.6in4 * 4 * 20mm / 0.2 * 0.2 * 0.8inQuantity10pcs10pcs10pcs10pcsSpecification5 * 5 * 12mm / 0.2 * 0.2 * 0.5in5 * 5 * 16mm / 0.2 * 0.2 * 0.6in5 * 5 * 20mm / 0.2 * 0.2 * 0.8in5 * 5 * 25mm / 0.2 * 0.2 * 1inQuantity10pcs10pcs10pcs10pcsSpecification6 * 6 * 16mm / 0.2 * 0.2 * 0.6in6 * 6 * 20mm / 0.2 * 0.2 * 0.8in6 * 6 * 25mm / 0.2 * 0.2 * 1in6 * 6 * 30mm / 0.2 * 0.2 * 1.2inQuantity5pcs5pcs5pcs5pcs Package List:140*Parallel Drive Shaft Keys  Package List