ITEM NAME:2pcs Black Round Flush Deck Mounting Base for Kayak Boat Fishing Rod Holder Description: Materials: ABS. Color: Black Bottom Diameter: 64mm/ 2.52 inch. Hole Diameter: 19mm/ 0.75 inch Tapped Hole Diameter: 4mm/ 0.16 inch Round Shape. With fishing rod holder hole plug Stainless steel mounting screws included. Durable fittings for kayak boat fishing rod holder Package Includes: 2 Pieces Fishing Rod Holder Mount Base 4 Pieces Screws SKU: MNF0003926266003646.Durable fittings for kayak boat fishing rod holder. Round Shape. With fishing rod holder hole plug. 2 Pieces Fishing Rod Holder Mount Base. Stainless steel mounting screws included. Materials: ABS.