A: Hi there! This 10 lb. base plate is intended to be used only with Uprights that are 8 feet tall or shorter. If you're using a taller system that is 10-14 feet tall, we would suggest (at a minimum) our 18 inch x 18 inch / 17 lb. Base (Product ID B519), or for even more stability at the taller height, our 18 inch x 18 inch / 35 lb. Base (Product ID B509).
As for the Base Pin, please be sure to select an option that matches the diameter of your Upright pipe. Pins meant for 1.5 inch diameter pipes do not work with 2 inch diameter Uprights, and 2 inch diameter Pins do not work with 1.5 inch diameter Uprights.
Please let us know if you have any questions. Thanks!