Smith Bolster Support Swivel Bracket supports bolster or bunk boards. Smith boat accessories at big savings! This Bolster Bracket and angle bracket assembly is designed to support horizontal 2" x 6" bolster or bunk boards. It"s slotted for vertical adjustment to properly support stepped down boat hulls. Other features: Non-slip notches avoid movement of horizontal boards while increasing load capacity; Made of heavy gauge zinc-plated steel; Width 2-7/16"; slot 5 7/8" x 1 5/32"; State Size. Order Today! Smith Bolster Support Swivel Bracket