Turn Button, Twist Lock Fastener Eyelet Heavy Clinch Plate 10 Pc. Set Designed for boat canvas applications these fasteners also work well for a variety of uses. Sometimes referred to Murphy or Common Sense fasteners. If you need the eyelets with the longer prongs for thicker fabrics or leather just send us an email when you order and we'll switch those out at no extra charge. We Ship Internationally! Northwest Tarp Canvas Have a Nice Day!