SILICON FLAT POWER KNOB Steering Wheel Knob Shipping from Korea, South. Usually, Delivery time takes 12~18 days. Handle on top mounted low, There are handles and unity,can be controlled by a small force. Nontoxic silicon is applied in grip section for preventing slipping. This product is made by a rubber material. So, It's soft and not slippery. Long term use,silicon on the substance when touched , detach easily available after washing.