Simms HardBite Studs are designed to provide additional stability in difficult wading conditions. These studs allow you to easily convert standard sole boots to studded. Style: Felt Studs - Designed for use with any Simms felt sole wading bootsStyle: Vibram Studs - Designed for use with any Simms Vibram StreamTread sole wading boots45+ Rockwell hard screwZinc plated for corrosion resistance1/4-inch hex head screwWelded carbide gripper pellets enhance traction and durabilityMay be used individually or in combination with HardBite Star Cleats (sold separately) in any pattern that the angler chooses to best fit the wading environmentPatent pendingQty. per Pack: 20 studs