The Island Anchor Shallow Water Anchor Pole Mount securely holds your pole for quick and easy anchoring. Mounts flush to the deck of your Pontoon. Made from heavy gauge anodized aluminum for strength and corrosion resistance. Proudly Made in the USA by Salty Adventures. Qty 1 Island Anchor Holder includes Backing Plate and 316SS Mounting Hardware. ID 1-1/8″ (Requires 1-3/4″ hole drilled in deck). Accepts 3/4″ and 1″ poles including poles with 2-piece couplers. Mounts flush to the deck of your pontoon. Securely holds pole for quick and easy anchoring.