Alumina
Miller Weldcraft 53N61 Nozzle Alumina GL #7 7/16" 10 pack
A nice touch on the Fiberglass Warehouse Black Gel Coat –Gallon (WAXED) with Catalyst is the resealable cap that stays tight.
Miller Weldcraft 53N61S Nozzle Alumina GL #8 1/2" 10 pack
A nice touch is that BHC Parts includes a small sample of compatible lubricant.