75 lb zinc-plated spring steel construction. Set includes: 42 each 3/32"x1-3/16", 30 each 5/64"x1-5/16", 25 each 5/64"x1-9/16", 25 each 3/64"x1-5/8", 20 each 9/64"x1-3/4", 8 each 5/32"x2-5/16"Features Include: Smaller-sized quality steel cotter pins perfect for mechanical, automotive, small-engine repairHairpin style gives fast, secure hold for bolts and pinsAn outstanding value--like buying 25 pins at the hardware store and getting 125 free!Organized by-size see-thru and re-sealable storage case.6 of the most-commonly used pin sizes