Golf Umbrella Holder Deluxe- Adjustable - Golf Cart Umbrella Holder Bore Diameter 22mm High quality Golf Umbrella Holder,Apply to a diameter of cart frame of 2-3 cm Adjusts to move umbrella left or right, forward or backward Protect your tools from sunshine. Adjustable 180 degrees moveable.Bore Diameter 22mm Installation instructions:when you need install the holder,you need drill two holes first in your Golf Cart,Wheelchair,Bike or Stroller,you may feel that it is troublesome,but we can promise you that it will be the most fastness in all holders,it can prevent the umbrella from blowing down by big wind.