Fetterman Ice Grip Tips "pullovers" provide effective protection from slipping and falling on icy surfaces. I invented Fetterman Ice Tips because I couldn't leave my house because of ice during the winter. Fetterman Ice Tips fit canes and crutches with tips up to 2" base diameter and work on the same principal as studded snow tires. They are especially good when used in conjunction with the SpikyPlus footwear system that pullover shoes and boots. Fetterman Ice Tips come in three sizes so be sure you know the base diameter of your crutch or cane tip. Easy installation, no tools necessary. Search "Fetterman" in Bonanza to see more of our quality crutch and cane accessories.