Simms Hard Bite Studs for Vibram Sole Wading Boots 20 PuckSimms Hard Bite Studs convert Simms Vibram soled wading boots, including Simms Sandals (with Vibram Sole), to studded wading boots. They have a coated finish to help grip slick boulders and can be added or removed as your fishing destinations change throughout the season. Simply use a 1/4" driver to screw them in for "Spider Man" like traction!!!Simms Hard Bite Studs1/4" hex head sharp point screw with carbide pellets welded to screw head 20 studs per package Buyer's Guide for Simms Cleats and Studs for your Wading BootsVibram Soles There are several options for Simms Wading Boots and cleats. The most popular is the Simms Hard Bite Star Cleat. This works in unison with the Vibram Streamtred Sole and fits right into the lug pattern. The Simms Hard Bite Star Cleat maintains a nice low profile but will provide a ton of traction once your weight compresses the sole of the boot. The next option for Vibram sole boot owners is the Simms Alumabite Star Cleat. These sit up a bit higher and give you a little more advanced traction. Since aluminum is relatively soft, it delivers fantastic traction. The downside is that they do sit up a bit higher than the Hard Bite Star Cleat so if you walk a long ways outside the river you might get tired of them! You can use a phillip's head screwdriver or a drill with a phillip's head attached to install either of these. All Simms Vibram Soled wading boots come with pilot holes and they are super easy to install. The last option is the Simms Hardbite Stud. This is more of a traditional stud and does quite deliver the traction of the Star Cleats and is more typically reserved for adding to your Simms Wading Sandals which is a sweet concept!Felt SolesIf you have felt soles, the choice is easy. A Simms Hard Bite Stud for your felt sole is the way to go. You can install them with a 1/4" screwdriver and it is super easy to do.