Get a complete kit with 10,000 markers (10 colors / 1000 of each color) includes a handy case to keep them in and not get them mixed up! Suits
Now there is a better way. Easily and permanently mark wires inside of panels, automotive wires, etc. Can be used with line or low voltage cables.
Rack-A-Tiers U-Phase Wire Marker Kit, Blue/Red/White/Green 52491 - The Home Depot
Easy-Peasy Wiring Easy
Test Lead master kits made in USA
Great for use as a marker tag on densely populated connectors. Sold in bags of 1000 Flexible, High-Shrink Ratio, Flame-Retardant, General Purpose,
Shrink Markers (Green/Standard)
Panduit - Wire Marker Books & Pens; Wire Marker Type: Book; Book
Gardner Bender 100-Piece Terminal Kit TK-806 - The Home Depot
Master Wire Marker Kit (Standard)-SH RNF-3000-KIT-2
Battery and Power Cables in Wire & Cable
Klein Tools 56251 Wire Marker Book, 120/240V 3 Phase 1-48 Label wires quickly and easily with Klein Tools’ new preprinted panel and wire markers. These markers are made of durable vinyl coated cloth and contain larger print to make them easier to read. Klein is now offering marker books in five different configurations to meet every labeling need.
Klein Tools 56251 - Wire Marker Book 120/240V 3 Phase 1-48
U-Phase® Large Wire Marker
Rack-A-Tiers 52480BK Mark My Wire - Wire Marking System, Black A high-density, quick-drying wire marker that makes permanently re-coloring wires simple and fast. With just one pass you can completely and evenly coat wires sized #14 to #10 using the hole. For wires larger than #10 you can use the notched tip. Whether you are reidentifying white wires on NM cables or travelers on 3-way lighting circuits, this marker is the perfect option for changing the color of your wires.
Rack-A-Tiers 52480BK Mark My Wire - Wire Marking System, Black
29 Posca Markers for Art, School Supplies, Rock Art