Feature:1. Hard nylon material,anti-corrosion and durable to use.2. Rotating ball design with fastener lock,allows you to adjust to any angle and position of your preference.3. Multiple screw holes on the base and the plate.4. Offer a wide application for your devices(not included),like fishfinder,GPS,camera etc.Specification:Offer a wide application and smooth motion on your kayak.Features:Hard nylon material,anti-corrosion and to use.Rotating ball design with fastener lock,allows you to adjust to any angle and position of your preference.Multiple screw holes on the base and the plate.Offer a wide application for your devices(not included),like fishfinder,GPS,camera etc.Specification:Type: Square / Round (optional)Material: Nylon + SiliconeSize: 10*10*15cm / 6.7*6.7*15cmFits screw diameter: M5 + M6 (screws are not included)Weight: approx. 301.5-345g / 0.7-0.8lbPackage List:1* Set of Kayak HolderPackage List:1* Set of Kayak Holder