Included Components The Otis Elite. Manufacturer Otis Technology. 16 firearm specific bronze bore brushes with size marked on brush stem (.17. 22 limited breech. 22/.223. 243-.260. 270/7mm. 30-06/.300/30-30/.308. 338-.35. 357-38cal/9mm. 40/10mm. 44/.45. 50cal. 410ga, 28ga, 20ga, 16ga, 12/10ga).