A quality US made brass threaded anchor fitting for wooden spearguns. Coarse threaded exterior for biting into wood, with a fine threaded interior for metric parallel screws.

Perfect for wooden speargun builds or modifications when an often removed fitting is required, eg reels.

When used with epoxy glue, provides a permanent waterproof fixing for wooden spearguns, far superior to a self tapping screw.

Come in convenient sizes:

M4 = 8mm High, 9.6mm OD (drill size 6.35mm / 1/4")

M5 = 11.5mm High, 12.5mm OD (drill size 9.3mm / 3/8")

M6 = 11.5mm High, 12.5mm OD (drill size 9.3mm / 3/8")