About This Seamless Fit with Spider rig Rod Holder: Purpose-built base plate for fishing rod holders, this fishing rod holder base works seamlessly with the Spirrelab fishing rod holder system—stable support on boat, kayak, or pontoon Quick-Release Mobility: This spider rig rod holder base lets anglers move and lock positions in seconds. A must-have crappie fishing rod holder base for adapting to wind, waves, or current Flush-Mount Safety Design: Flat boat rod holder base plate design reduces tripping hazards on deck. Compact boat fishing rod holder parts keep your feet safe while maximizing space Screw-Mount for Lasting Strength: Secure the fishing pole holder mounting base with screws to your boat deck. Works with Spirrelab rod holder knobs (sold with the holder) to let you reposition the rack quickly Aluminum Build: Crafted from anodized aluminum, this aluminum rod holder base resists corrosion in freshwater or saltwater. A tough spider rigging boat rod rack base that lasts season after season. Attention: The package only contains a base plate and mounting screws accessories. Overview Material : Aluminum Color : Sliver Brand : SPIRRELAB Mounting Type : Deck Mount Product Dimensions : 4.5"D x 4"W x 0.35"H