The Wright Stuff Ingrid Cane or Crutch Tip with Retractable Spike is designed and manufactured in Sweden, the cane or crutch tip is made of high quality polyurethane and provides an excellent grip both indoors and outdoors. The retractable spike is made of stainless steel and will not rust. The Retractable Spike provides a firm grip on snow, ice and most other outdoor surfaces. The spike easily retracts for use during summer months or while indoors, simply flip the spike up when not in use. Fully retracted spike will not damage floors. The tread pattern at the bottom of the tip does not wear as quickly as a conventional can or crutch tips. Inside the tip is a rust proof zinc-plated washer that prevents the cane or crutch from wearing through the tip.The tip has a patented elastic neck that adjusts to the dimension of the cane or crutch shaft making it easy for the user to replace or substitute tips as needed. Features: Provides a firm grip on snow, ice and most other outdoor surfaces. Retracted spike will not damage floors. Easy to install. Retractable Ice & Snow Spike Tip for Canes & Crutches Specifications:Fits: cane or crutch shafts measuring 5/8 inch - 7/8 inch (16 - 22 millimeters).Color: Black.One per package.