This classic caulking iron is traditionally used by boat builders for packing oakum or cotton into the seams between hull planks, but also has other uses.

Traditional builders use these irons with a mallet to pack oakum into window and door frame gaps to create a seal. Made of Cast Malleable Iron.

Made since 1826 in the USA by C.S. Osborne & Co.

Length: 6"

Blade Width: 2-1/4"

Blade Thickness: 1/8"

Weight: 230g

Osborne No. 273-1