Humminbird 740179-1 IDMK H89R Reinforced in-Dash Mounting Kit, Helix 8/9 G3 and G3N Series Fishfinders, Black HELIX 8/9 Kit Style:HELIX 8/9 Kit Material：304 Stainless Steel Thread pitch:

Material：304 Stainless Steel Thread pitch: 1

Requires pre-drilled holes (hole should be the same diameter as the threaded post)

and leave the inch of backer on the roll

Our inserts work great with soft woods and hard woods

Humminbird 740179-1 IDMK H89R Reinforced in-Dash Mounting Kit, Helix 8/9 G3 and G3N Series Fishfinders, Black HELIX 8/9 Kit Style:HELIX 8/9 Kit Material：304 Stainless Steel Thread pitch:Humminbird 740179 1 IDMK H89R Reinforced in Dash Mounting Kit, Helix 8 9 G3 and G3N Series Fishfinders, Black Humminbird 740179 1 IDMK H89R In Dash Mount. Overview: In Dash Mounting Kit allows quick and easy, in dash installation, with all necessary mounting hardware. Compatible Fish Finders: HELIX 8 G3N Series All models, HELIX 9 G3N Series All models. Product Features Reinforced mounting kit Helix 8 and Helix 9 models Allows quick and easy in dash