Seachoice Twist Studs With 2-Hole Screw Base make it a snap to securely mount heavy fabrics to hard surfaces. They are designed for use with four-prong eyelets and washers. Seachoice is committed to delivering quality marine accessories and OEM replacement parts to satisfy fishing, boating and watersports enthusiasts worldwide. Seachoice is run for and by boaters, offering a wide-ranging product line while remaining affordable.