Check the listing for details. A.I.FORCE Cane Tip - Self Standing Foot Replacement, 5/8 inch, Black. Color: black, Condition: New. Listed at 14.88 USD. SELF-STANDING QUAD BASE FOR ENHANCED STABILITY: Unique four-point design allows the cane to stand upright on its own, providing greater balance and preventing it from falling over on any surface. SHOCK-ABSORBING TO REDUCE FATIGUE: The cane tip flexes as you walk, absorbing shock with each step to effectively reduce fatigue and discomfort in your hand and wrist.