Mix of jgs and Manson most have 1 chamber on them some have up to 3 more expensive reamers have TIN or TICN coatings all are cut for oil grooves.
6bra $125
6br $125
6arc carbide $175
6 creed carbide $175
223 $75
6.5x47$75
6.5 creed $75
22lr nevus $125
30 cal throater $30