Recommendation: We strongly recommend to get 'replacement' and 'cleanout nozzles' in case it clogs or the nozzle dries out. Note: Please don't forget to shake the Aluma's can – this is heavy duty formula – literally needs a 3-4 minute shake before its use. The special feature of Aluma-Hyde II (and the reason for its development) is its increased resistance to bore cleaners, solvents and other cleaning chemicals, even trichloroethylene. Today's family of fast, aggressive bore cleaners really do a terrific job getting dirty gun bores sparkling clean, but they can wreak particular havoc with any other finish they contact. After full cure, Aluma-Hyde II proved solvent-proof to all but the most aggressive, copper-removing bore solvents. Aluma-Hyde II is formulated with a hard-curing epoxy base that contains additional, high-density pigment for a durable finish that sticks to all properly prepared aluminum and alloy surfaces, steel and plastics - it's great on synthetic stocks. Aluma-Hyde II is available in a variety of colors to help the gunsmith match the vast number of applications found in the average gunshop. Aluma-Hyde II dries to the touch in only minutes and reaches full cure in about a week. Absolutely no primer coat is required for a tough, durable, abrasion-resistant, rustproof finish that blends beautifully and compliments all gun finishing applications.