These snow blower shear pins and cotter pins are made of durable metal materials with high-strength, wear-resistant treatment and provide superior durability and pressure resistance compared to fragile plastic alternatives, perfect for heavy snow clearing work Compatibility with major snowblower brands such as Craftsmen, Cadets and Bitts, specifically designed for 2 stage 300 / 500 / 600 2005 series snow blowers and models such as Bilts Storm 2410 / 2620, Cadets 524 and Craftsmen 247 88700 1 The corrosion-resistant metal construction ensures reliability in damp or highly saline environments, is suitable for coastal areas and long-term outdoor storage while ensuring that your snow blower works optimally Features a specially designed cotter pin structure that allows instant installation without tools, ideal for frequent maintenance scenarios and multiple device repairs during the harsh winter The shear pins automatically break under excessive load to prevent damage to equipment, providing essential safety for private users and property managers in harsh winter conditions, Manufacturer: OSNIYAW