3/4-inch-long spikes. 10 spikes per foot * Made from 4130 Chromoly Steel * 3-year manufacturer"s warranty. Life-time warranty on Leafspring Flex Bar * Snow Release Skins included * One size fits all: US Mens 6-13. Womens 7-14. 21.1 ounces / 608 grams per pair. Pack Sizes: 8?" x 3½" x 4¾"