Please note: Requires cordless drill. Secure your footing on slimy weed covered rocks and in heavy surf with Grip Studs high performance boot studs. These durable traction studs with their unique wide-auger shank do not bend, back-out or fold over in the sole like other narrow-threaded studs. Grip Studs feature a tough, solid tungsten carbide core-to-tip shaft and a rust-resistant finish, making them the perfect stud for rock hoppers! The unique installation notches of the Grip Studs design ensure easy installation and removal with the handy power tool. Grip Studs surf fishing studs work in almost any rubber or felt sole and are available in both aggressive and standard sizes ensuring compatibility with your boot sole and optimizing traction based on your surf fishing conditions.