Interstate Pneumatics BTN5A Needle Tip Pack for Air Blow Guns. Now you dont have to worry about those hidden and hard to reach areas to remove dust and residue. Because these high quality needle tips allow user to get into and blow out tight cavities, crevices and dies too narrow for other tips to reach. Stainless steel needle tips with nickel plated brass base provides corrosion resistance, rust resistance, stain resistance and wear resistance. All tips have 1/8" MPT.