Kraft Tool Co.® HC178 Gunite Shoes with 1.5" Spikes, Adjustable. Protect your work and bring air bubbles out of applications with this pair of Gunite Spiked Shoes. Thirteen 1-1/2" steel spikes (overall length) are precisely positioned around the hard plastic base for balance when walking on epoxy, gunite, or shotcrete materials. The back of each shoe has a stop to prevent work boots from moving around the sandal. Each shoe is equipped with two adjustable nylon straps that fit around the work boot. Plastic clasps secure straps to minimize loosening that occurs with hook and loop closures. The overall length of shoe is 12". Use with work boots for safety. One size fits most. Sold as a pair. For best results tighten spikes before use.