About this item Size: 41 x 40 x 35 mm / 1.6 x 1.18 x 0.27 inch Material: Kayak track mount tie downs are made of nylon and stainless steel, designed for use in harsh marine environments, and long service life Easy to install: Just install the nut halfway through the screw and stop tightening, tighten the screws on the kayak track, The cup holder is fixed on the kayak track Easy to install: Just install the nut halfway through the screw and stop tightening, tighten the screws on the kayak track, The cup holder is fixed on the kayak track Package includes: 1 pcs kayak track mount tie down