CONSTRUCTION: Designed for kayaks and small boats High-strength composite metal retains long-lasting quality years and years beyond first use 360 deg swiveling arm extends from a compact 11-1/2 in. to 18 in. 2 lock knobs lock length into place for doubled security Rod holder head allows quick changing of positions with easy twist adjustment and probe head pivots Compact base offers the most small-spaced design on the market Designed to allow attachment of fish finder mount for pulling everything together into one structure Adjustable to micro level degree of changes using included No. 415 slip discs for placement between rod holder post and Scotty Rod Holder for achieving perfect position Base: 1-3/4" W x 3/8 in. H x 7 in. L Style: 141T