GrovTec USA Bulk Parts Features GrovTec is known for manufacturing exceptional quality products. These sling swivel studs are designed to allow the user to attach accessories such as slings and bipods to their firearms. These studs provide a solid platform which will enhance accuracy and your shooting pleasure. Made in the U.S.A. GrovTec USA Bulk Parts Specifications Manufacturer: Grovtec MFG Product #: GTHM52 Size: 3/4 Quantity: 48 Pack