Construction phrases such as CNC aluminum appear in jigging reel listings, and the listings are the makers' descriptions of each reel as built. This guide covers what a construction listing states, using a verified example, and where questions beyond the listings belong. It does not add durability claims the listings do not make.
What a construction listing states
A jigging reel listing states the maker's specifications for the product: the gear ratio, the stated line retrieve per handle turn, the maximum drag, the weight, the line capacity, the bearing configuration, the construction, and the available sizes, colorways, and retrieve configurations. Those stated details are the makers' own description of the reel as built. When comparing reels, read the stated figures side by side rather than relying on general claims. Anything the listings leave out should be settled with the makers rather than inferred from the construction phrase alone.
An example: a verified listing
The GOOFISH Abyss Jigger Gen 1 listing states a 6.08:1 gear ratio and CNC aluminum construction in its listing title, along with a retrieve of 30.06 inches of line per handle turn, 9+2 stainless bearings, a maximum drag of 30kg, a weight of about 544g, capacity for 300m of 0.37mm line, two colorways, and left- or right-hand retrieve. Those are the makers' stated details for the product. The listing does not state further specifications, so ask the makers about anything else you need to know.

Reading construction phrases against the stated figures
A construction phrase is most useful when read together with the rest of the stated specification: the stated gear ratio, bearings, maximum drag, weight, and capacity. Comparing those stated figures across listings gives a picture of what each maker describes for each reel. Questions about how a reel holds up beyond the stated details belong with the manufacturers, whose instructions and descriptions are the authority on their own products.
Comparing listings
Our jigging reels collection lists the stated specifications for each reel, so the reels can be compared from the makers' figures rather than from general rules. Ask the makers when a listing's details are unclear.

Frequently asked questions
What does a construction phrase in a listing mean?
It is part of the maker's stated specification for the reel. Read it together with the stated figures, and confirm anything not stated with the maker.
How should jigging reels be compared?
By the makers' stated figures, read side by side, rather than by rankings or general claims.
Who is the authority on a reel's construction?
The manufacturers. Their listings and instructions describe the products as built, and anything unclear should be settled with them.
The listings first
Reading a jigging reel listing starts with what the maker states: the construction phrase, the stated figures, and the sizes and colorways. Compare the listings, follow the makers' descriptions, and let their answers settle anything unclear. That is the whole method.