EasyCare Quick Studs add traction to hoof boots and urethane horse shoes for slippery conditions. Easy to apply, you can customize the number of studs needed and placement pattern based on your unique ground conditions. Your horse will be more comfortable and safe with EasyCare Quick Studs. Application requires Quick Stud Application Tool (sold separately). Available in single and 16-stud packs.for muddy conditions Long lasting, Tungsten Carbide tip and core with hardened steel screw portion, one size. Purchase seperately the application tool for quick and easy application process allows studs to be installed and removed with the boot on the hoof (see instructions). Application tool plus your drill/drill bit of choice for installation (use a 3/16" drill bit).