Compatibility with major snow blower brands including Craftsmen, Cadets and Bitts, specifically designed for 2005+ 300 / 500 / 600 serie two stage blowers and models like Bilts Storm 2410 / 2620, Cadets 524, and Craftsmen 247 88700 1 Features specially designed cotter pin structure that allows instants installation without tool, ideal for frequent maintenance scenarios and multiple equipment repairs during intense winter Made from durability metal materials with high strength wear resistant, these snow blower shear pins and cotter pins superior durability and pressure resistance compared to fragile alternatives, perfect for heavy snow removal operations resistant metal construction maintain reliability in humid or high salinity environments, suitable for coastal areas and long term outdoor storage while keeping your snow blower functioning optimally The shear pins automatically break under excessive load to equipment damage, providing essential for residential users and property managers during harsh winter conditions, Manufacturer: FHGSPQWM