Flexible insulated winding wire for electronics prototyping and repair. Specifications: material is tinned copper conductor with a PVC jacket. Type: 30 AWG. Copper core diameter: 0.25 mm. Outer diameter: 0.58 mm. Length: 250 m. Temperature rating: up to 80 C. Color options: 11 colors. Model/Part number: B301000. Packaging: plastic spool included. Design: low-fray for easy stripping and finishing. Key benefits - Reliable conductivity with corrosion resistance from tinned copper. - Durable PVC insulation provides safe handling and compatibility with common components. - Small gauge supports tight routing for signal wiring and breadboard work. - 11 colors enable clear color-coding to reduce assembly errors. - Long 250 m reel lowers refill frequency and keeps work area organized on a spool. - Easy termination thanks to the low-fray construction. Use scenarios - Prototyping circuits on breadboards or perfboards for quick testing. - Winding small inductors, coils, or jumper wires for compact assemblies. - Wiring for testing fixtures, electronics repairs, or hobby projects where neat color-coding helps. What you get - One 250 m reel of 30 AWG tinned copper winding wire with 11-color PVC insulation, on a plastic spool, model B301000.