Enhance your traction with the Orvis PosiGrip Screw-In Wading Boot Studs! These studs can be added to any wading boot, either felt or rubber, with at least a half-inch midsole depth. The Orvis PosiGrip Screw-In Studs are tungsten carbide tipped, giving them an aggressive and durable spike that can help to provide you with maximum traction, even on the most unstable of terrains. Add some traction to your favorite boots with the Orvis PosiGrip Screw-In Wading Boot Studs! Screw-in studs with tungsten-carbide tips Sharp tip for easy instillation 1/4 in. hex head screws Can be added to any wading boot with at least 1/2 in. of mid-sole depth Adapter for power drill included Qty. per Pack: 24 studs Orvis PosiGrip Screw-In Wading Boot Studs are made in the U.S.A.