This 12 piece set of brass button jags includes all of our 10-32 threaded jags. Calibers include .32, .36, .38, .40, .44, .45, .50, .54, .58, .62, .69 and .75. Button jags in this set are ideal for use with our 10-32 Creedmoor stainless steel ramrods. The concave end allows it to be used for loading a patched round ball. Jagged edges grip the damp cleaning patch securely while wiping a dirty bore between shots.