Brass Wool
Very effective cleaning method. Leaves a small layer of solder on the tip preventing oxidation between cleaning and rewetting.
BRASS TACK Hand Dyed Felted Wool Fabric for Wool Applique and Rug Hook – Olympic Wool Works
Brass wool /Welding head cleaning ball, AI
Fine Bronze Wool, 5-lb reel, 6 reels/cs - Global Material Technologies, Inc.
Unlined jacket in ultra-light brass wool, silk and linen
Weller WLACCBS-02 Brass wool for soldering tip 5pcs
Original JBC CL6210 Brass Wool,CL6205 Inox Wool - AliExpress
Don't buy your brass wool on AliExpress folks (why am I surprised?) : r/soldering
Brass Wool SOLDERING IRON TIP CLEANING BALL Refill Cleaner Scrubber Cleaner Tool
Brass wool, 50 g
12 Gauge Brass Wool Snap Caps by Carlsons
Xytronic 459 Brass Wool Solder Tip Cleaner Refill
Tip Cleaner Replacement Brass Wool - Solarbotics Ltd.
Steel Wool and Non Ferrous Wools _ Steel Wool and Non Ferrous Wools
Mini Bronze Wool Pads – Pack of 3