ALAZCO Set of 30 Snap Button Screw-In Studs - All Phillips Head - Premium Quality Made in TAIWAN Button snap studs for boat covers, winter covers, canopies and tarps Galvanized steel screw with nickel-plated steel snap for superior rust & corrosion resistance 1/4" barrel, 3/8" outside diameter snap; 5/8" #8 screw with Phillips head Excellent quality suitable for marine applications; made in Taiwan Set of 30 Screws By ALAZCO