Features 1.100% brand new and high quality. 2.It is corrosion resistant, not easy to rust. 3.It is durable and has a long service life. 4.It is complete in specification, and can be applied in various working situations. 5.With standard processing, it can be used as perfect fastener. Specification 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 New Size: Specification 3 * 3 * 8mm / 0.1 * 0.1 * 0.3in 3 * 3 * 10mm / 0.1 * 0.1 * 0.4in 3 * 3 * 12mm / 0.1 * 0.1 * 0.5in 3 * 3 * 16mm / 0.1 * 0.1 * 0.6in Quantity 10pcs 10pcs 10pcs 10pcs Specification 4 * 4 * 10mm / 0.2 * 0.2 * 0.4in 4 * 4 * 12mm / 0.2 * 0.2 * 0.5in 4 * 4 * 16mm / 0.2 * 0.2 * 0.6in 4 * 4 * 20mm / 0.2 * 0.2 * 0.8in Quantity 10pcs 10pcs 10pcs 10pcs Specification 5 * 5 * 12mm / 0.2 * 0.2 * 0.5in 5 * 5 * 16mm / 0.2 * 0.2 * 0.6in 5 * 5 * 20mm / 0.2 * 0.2 * 0.8in 5 * 5 * 25mm / 0.2 * 0.2 * 1in Quantity 10pcs 10pcs 10pcs 10pcs Specification 6 * 6 * 16mm / 0.2 * 0.2 * 0.6in 6 * 6 * 20mm / 0.2 * 0.2 * 0.8in 6 * 6 * 25mm / 0.2 * 0.2 * 1in 6 * 6 * 30mm / 0.2 * 0.2 * 1.2in Quantity 5pcs 5pcs 5pcs 5pcs Package List: 140*Parallel Drive Shaft Keys Package List