Carbon Steel R Pin Clip 100pcs 6 Size Assortment for Threaded Connection Anti Loosening Automotive Power Equipment Features： 1、Multi Size Combination: This Cotter Pins Kits covers 6 commonly used sizes, suitable for fixing and connecting needs of various machinery, vehicle maintenance, and outdoor equipment. Whether it is heavy truck, motorcycle maintenance, or daily DIY projects, suitable pin sizes can be found. 2、High Strength Material, Durable and Reliable: Made of premium-quality carbon steel, heat treated to enhance hardness and toughness, capable of withstanding large tensile and shear forces, effectively preventing loosening or fracture, ensuring the long-term stability and safety of fasteners. 3、Easy Installation and Quick Locking: The R-shaped design is convenient for handheld operation, making it easy to install and remove even in small spaces. The unique opening and closing mechanism ensures that the pin can quickly bite and fix, improving work efficiency and saving time. 4、Rust Prevention Treatment: The surface is treated with galvanized rust prevention to effectively resist corrosion. Even in humid or harsh environments, it can maintain good appearance and function, extend service life, and reduce the cost of frequent replacement. 5、Convenient Storage and Easy Management: All Cotter Pins are classified by size and packaged in a portable storage box for quick access on site, as well as convenient inventory management and loss preventi Specification： Item: Cotter Pins Material: Carbon Steel Color: Silver Product Size: Max R Clips: 4.5*0.25*1cm/1.77*0.098*0.39inch Package Size: 10.5*7*2.5cm/4.13*2.75*0.98inch Package Weight: 130g Package List： 10* 2.5mm * 45mm Cotter Pins 10* 2mm * 40mm Cotter Pins 10* 1.8mm * 37mm Cotter Pins 15* 1.5mm * 28mm Cotter Pins 20* 1.2mm * 21mm Cotter Pins 35* 1mm * 17mm Cotter Pins 1* Storage Box