I can’t remember what mine are, if I remember when I’m next in the garage and have the car out so I can reach where they are stored, I’ll have a look.
From memory I paid ~£85 for a set and an extra rod or 2. They have glued, crimped and pinned brass, screw on connectors (I didn’t follow the advice simply by mistake. Screwed is fine, just keep the drill turning the right way at all times!!) Yes you use a drill and keep feeding the rods at all times when turning, or they will heat and wear where they touch the flue. My rods were sold as higher grade/pro grade and claimed more resistant to heat/wear. They look very very like those linked… But screwed connectors. I’ve only used twice so can’t comment on life, just decided to pay that bit more to hopefully avoid a right pita that retrieving a broken cheap rod would be. Feed the rods in with drill at a slow speed, then come back out with the drill on high speed. I sweep with stove in, through the hatch on the pipe above the stove, baffle out to let the soot fall to the grate, open door and remove when done. All very easy, but I need a spanner to undo the rods as they tighten together firmly…a pin connector is faster.