Enhance the reliability and durability of your fastening projects with this premium set of lock washers, crafted from high-quality 65# manganese steel. Designed for strength and longevity, these sturdy lock washers provide secure fastening solutions that prevent loosening due to vibration or torque. This comprehensive set includes a variety of sizes to meet diverse application needs, making it an essential addition to any workshop or tool kit. Key Features: · Durable 65# Manganese Steel Construction: Ensures robustness and long-lasting performance, offering excellent resistance to wear and deformation. · Wide Size Range: Includes multiple sizes (3*9*0.25mm to 12*25*0.25mm) totaling 260 pieces, providing flexibility and convenience for various fastening requirements. · Secure Locking Function: Designed to prevent nuts and bolts from loosening, enhancing the safety and stability of mechanical assemblies. · Blackened Surface Finish: Offers rust resistance and a sleek appearance, improving both durability and aesthetics. · Organized Storage Box: All washers are neatly assorted and packed in a durable plastic box for easy storage, quick access, and portability. · Versatile Application: Suitable for automotive, machinery, electrical, and household repair projects requiring reliable locking washers. Specifications: · Material: 65# Manganese Steel · Surface Finish: Blackening · Sizes & Quantities:  - 3*9*0.25mm – 30 pcs  - 4*12*0.25mm – 30 pcs  - 5*12*0.25mm – 40 pcs  - 6*16*0.25mm – 50 pcs  - 8*17.5*0.25mm – 50 pcs  - 10*20*0.25mm – 40 pcs  - 12*25*0.25mm – 20 pcs · Total Quantity: 260 pcs · Approximate Weight: 169g / 6oz Package Includes: · 1 x Assorted Lock Washers Set in Plastic Storage Box This durable and versatile lock washer set provides an efficient solution for maintaining secure fastenings in diverse applications, helping to extend the lifespan and safety of your equipment.