You are looking at 4 x 16mm Crutch Ferrules.
4 of 22mm Coopers Ferrules Crutch tip Walking Stick Frame Ends 7/8"
4 of 25mm Coopers Crutch tip Walking Stick Frame Ferrules Stick End 1"
4 of 18mm Grey Coopers Ferrules Crutch tip Stick Frame Ends 11/16"
supregear Rubber Ferrules for Walking Sticks (4-Pack), 16mm Non-Slip Replacement Cane Tip for Standard Walking Stick Folding Cane Crutch Accessory, End Caps Stoppers Tips
4-Pack 16mm Non-Slip Walking Stick Rubber Ferrules, Durable Cane Tip Replacements with Metal Insert, Anti-Skid Crutch End Caps for Hiking & Everyday Use, Black
4 of 22mm Black Ferrules Crutch tip Stick Frame Ends 7/8"
