These boot studs are designed for durability and ultimate traction, and are great for riding on ice, mud or turf. Four studs per boot are recommended, but more may be used. Studs come complete with installation instructions, and can be used in all sizes of EasyCare riding boots. Note: Studs come in regular and long sizes. For the Easyboot line, regular studs can only be used in size 4 and smaller boots, due to increased sole thickness. Order long studs for boot sizes 5-7 in the Easyboot line, all sizes of the Easyboot Grip, all sizes of the Boa Horse boot, and for all Old Macs styles. Sold in sets of four (4).