Unique, precision-machined all steel pins. Fits 3/16" slotted sights. Wrapped fiber provides greater brightness. Available in .019 and .029 diameters. Wholesale and OEM & ODM Service: We are orignal maunfacture ,we are the source,we could provide OEM & ODM servie,or you could buy our products for selling online,on your local shop and anyother way. if there is any information you are interesting in,please feel free to contact us. I'll be happy to answer in a timely matter. if you want to wholesale big quantity items,I will give you the lowest price.