The DaHo Hollow Spectra Threading Needles are hollow inside, except for the point, so additional material, typically monofilament or fluorocarbon line, can be inserted into the needle. Then, the needle with the inserted mono line, is inserted, or threaded, into the hollow center section of the spectra line. The needle, and attached mono line, is typically inserted inside of the spectra from 3 to 5 feet to provide the best strength of the join. Because of the slick surface of the mono line, the end point of the spectra must be finished to secure it to the mono. This finishing is usually done by gluing, serving, or crimping the spectra line end. This ensures the join will not slip before the compression pressure occurs to hold the joined lines together.

The primary size of the threading needle is the ID, or Internal Diameter, indicating how large of monofilament line that it will hold inside. The needle size you need is determined by the size of the monofilament line you are using. Typically, these sizes can be found on the spool the line was purchased on, or by visiting the line manufacturer’s website. You will usually want to get a needle that will fit the line you are using, without going over in size. If the monofilament line is too large for the needle, you will have to cut it down, which is not much fun to do… The needles will hold smaller sizes of monofilament line, to a point, without issue. We offer most typically used sizes in our standard product offerings. They are named for the typical size of mono that they will hold, but you really need to select your needles by the actual size of your mono line. If you have a special need, we can make custom sizes for you, that will exactly fit your specific needs, at minimal additional cost.

In Threading needles, we typically use thinner walled tubing to manufacture the needle. This is so the overall size of the needle will remain as small as possible, while offering the largest interior size to hold the monofilament line. Thinner is definitely better in this case, and DaHo needles are the thinnest available…

Below is a table identifying all of DaHo "Standard" and "Big" (shown in green)Threading Needle specifications:

Model	Description	OD Size	ID Size	Spectra Sizes
N05026	50# Threading Needle	.036"/.90mm	.026"/.67mm	60 to 130#
N06032	60# Threading Needle	.042"/1.06mm	.032"/.81mm	80 to 130#
N08038	80# Threading Needle	.050"/1.27mm	.038"/.96mm	100 to 200#
N10042	100# Threading Needle	.058"/1.48mm	.042"/1.06mm	130 to 300#
N13047	130# Threading Needle	.058"/1.48mm	.047"/1.19mm	130 to 300#
N15053	150# Threading Needle	.065"/1.65m	.053"/1.35mm	200# and up
N20060	200# Threading Needle	.072"/1.83mm	.060"/1.50mm	200# and up
N30070	300# Big Threading Needle	.083"/2.11mm	.070"/1.78mm	300# and up
N40077	400# Big Threading Needle	.095"/2.41mm	.077"/1.96mm	400# and up
N50091	500# Big Threading Needle	.0109"/2.77mm	.091"/2.31mm	500# and up