13 Sizes 390 Pieces: Cotter Spring Pin Kit Includes: M1.5*6 M2*18 M2.5*10 M2.5*18 M3*6 M3*12 M3*18 M4*8 M4*10 M4*14 M4*20 M5*30 M6*30mm actual size and quantity enough to meet your different needs. Sturdy and Durable: Spring pins made of high density manganese steel, high hardness and stable black oxide finish resist corrosion, provide good appearance and good durability. Wide application: Split spring pins are widely used in automobiles, machinery, garages, workshops, electrical equipment, for positioning, connecting and fixing between parts. Portable: Equipped with a plastic box, you can classify these spring pins in an organized way, more convenient to carry and take, easily and quickly find their own needs. Perfect attachments: The exquisite craftsmanship of the cotter pin kit provides you with an excellent experience, smooth and burr-free, the fastener seeker's best choice.