Grumman Sportboat,Gunter Sailing Rig Mast Step,& Upper mast mount

Description

Grumman Sportboat,Gunter Sailing Rig,  Mast Step,& Upper mast mount. this  is for the upper (thwart) and lower mast  mount . You can get the lower mast mount for either the original square hole for the gunther mast , or a round hole  if using another mast ,
I NEED TO WHEN YOU ORDER SO I  KNOW THE HOLE SIZE SO I CAN MACHINE TO  FIT
let me know the size of the mast  diameter  . Or if using original mast just message and say using original  Gunther setup .  I am also selling the lee board mount and lee boards, The Rudder,  to be able to sail the sport boat. Free SHipping.