Part of the Scotty Rodmaster II series, the Boom Rod Holder #358 fits 1 1/4" Scotty downrigger booms - clamp on style.
WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DHEP) and lead, which are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov