The cable with a stretch length of 4 meters is processed from a 6-meter wire, and the spring part is about 0.6 meters The cable with a stretch length of 5 meters is made of 7 meters of wire, and the spring part is about 0.7 meters Product application: CNC handwheels, encoders, computers, electronic equipment, etc. Conductor structure: Use single strand or glued bare copper wire (or tinned copper wire)Insulation material: Polyethylene oxide, polyethylene, can be used to meet the requirements of different occasions. Cores 4 Meters 6 Meters Industrial Manual Generator Coiled Spring Spiral Wire Retractable Coil (Color : 12 cores Stretch 4 Meters Coiled Extension Cord Black Spring Spiral CNC Handwheel Shield Cable 7 Cores To 26 Cores 4 Meters 6 Meters Industrial Manual Generator Coiled Spring Spiral Wire Retractable Coil Generator Shield Sheath material: Generally used flame-retardant polyurethane elastic material Working temperature: -65 ~ 80 degrees. Product Features: Good flexibility and elasticity (Extended length up to 2-3 times the original cable). And good cold resistance, flame retardancy, oil resistance, and abrasion resistance.