Ultem is the material that escaped from the aerospace lab and ended up on $60 pocket knives. It is amber, translucent, slightly odd-looking and genuinely useful: it is stiff, it is stable in heat, and it does not pick up the scratches that make G10 look old. The Kubey Coeus KU122P wraps it around a 3.11-inch D2 spear point for $60.
The numbers: 7.28 inches overall, 3.11-inch spear point at 0.12 inch stock, HRC 60-62, bead blasted flat grind, handle 4.17 inches long and 0.51 inch thick, liner lock, ambidextrous with ceramic ball bearings, 3.21 ounces. Kubey lists Ultem as the handle color and G-10 as the material on the spec sheet, which is the kind of copy error that shows up on small-brand listings; the handle is the translucent amber Ultem in the photographs.
A spear point is the most general-purpose blade shape there is, which makes it the right choice for a knife with no other specialization. It has a centered tip for piercing, a symmetrical curve for slicing and a straight section for scraping. D2 at 60-62 HRC will hold that edge through a month of boxes, and it will also rust if you leave it in a damp bag, so the Coeus is a knife that rewards a wipe-down.
The Coeus line is broad for the money: $50 gets you black, blue, red, jade or tan G10 with D2, $60 gets the Ultem, and $70 buys a Cerate Orange version with a 14C28N blade at HRC 60-62 and a green coated finish. Kubey is essentially selling the same knife in six material stories, and the Ultem sits in the middle as the one that looks unlike anything else in a drawer of black folders.
Verdict: buy it for the material if translucent amber is your thing, and buy the $70 14C28N version if you actually want to use it hard. Skip both if you need a blade under three inches, because 3.11 inches is past the limit in a lot of places.