Decent kit for the price.  Quality on par with the usual bubble kits you get at big box stores, except you get about 15 kits in one case (and the rods are brass).  There IS a .40 (same as the .45 brush).  Here is the list of brush sizes (each brush is marked)  17-cal,  22-cal,  270-cal,  30-cal,  9mm/38-cal,  40-45-cal/10mm,  410-ga,  20/28-ga,  10/12-ga.