Check the listing for details. DOWNRIGGER BASE MOUNTING KIT for PENN Fathom-Master downriggers HARDWARE INCLUDE. Condition: New. Listed at 42.00 USD. Standard mounting base plate mounting kit manufactured in the USA by Troll-Master. It fits Penn Fathom-Master downriggers all manual and electric models.This part number PR-1001 is replacing Penn's part number 133-600 Stainless mounting screws and retaining nut is included Mounting screws are designed for swivel base installation and / or gimbal mount. The Mounting hardware kits by Troll-master are available for sale: Hardware Kit for mounting of PENN Swivel-Matic© or Troll-Master SEAHORSE© Downrigger Swivel bases. Product number KN-4006 Ebay Item Number 121575740348 Hardware Kit for mounting of PENN or Troll-Master Fathom-Master© Downriggers. Product number KN-4002Ebay Item Number 111603626586 Hardware Kit for mounting of PENN or Troll-Master Fathom-Master© Downrigger standard bases. Product number KN-4005Ebay Item Number 111603639739