The Ingrid Classic Cane or Crutch Tip features a convex bottom which enhances both walking comfort and durability. The Tip is manufactured in Sweden and made of high quality polyurethane. The use of this material makes them extremely durable and provides for an excellent grip both indoors and outdoors.Safety is enhanced because the tread pattern at the bottom of the tip does not wear as quickly as a conventional tip. Inside the tip is a rust proof metal washer made of zinc plated steel which prevents the cane or crutch from wearing through the tip. The “tire track” treads at the point of contact provide an excellent grip on most surfaces.This cane tip has a patented elastic neck which adjusts to the dimension of the cane or crutch shaft, making it easy for the user to replace tips as needed.Ingrid Classic Cane or Crutch Tip Features:Extremely durable and provides for an excellent grip both indoors and outdoors.Tip does not wear as quickly as a conventional tip.Convex bottom enhances both walking comfort and durability.Ingrid Classic Cane or Crutch Tip Specifications:Fits: cane and crutch shafts measuring 1/2 inch – 11/16 inch (13 – 17 millimeters).Color – black.