GrovTec US 48 Pack 0.75in Wood Screw Black. 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 specialized factories Specifications for GrovTec US 12 Pack 0.75in Wood Screw: Manufacturer: GrovTec US Color: Black Fabric/Material: Steel Condition: New Package Contents: GrovTec US 12 Pack 0.75in Wood Screw GrovTec US GTHM52: 48 Pack 0.75in Wood Screw Black