Description: Easily and soon attaches into walking cane shafts Use sturdy non-skid rubber materials The triangle principle design will present larger balance and stability when walking on choppy or loose , adding grass, gravel and sand Hole Diameter: approx 19mm/ 3/4 inch Height: approx 7cm/ 2 inch Whole Diameter: approx 11/ four inch Material: Rubber Package Includes: 1 Piece of crutch tip