Prime-Line Extension Spring, Spring Steel Const, Nickel-Plated Finish, .072 GA x 5/8 in. x 3-1/4 in., Single Loop Open, (2-Pack) SP 9618 - The Home Depot
The Most Common Spring Wire Materials | Springs Fabrication
Wire spring spiral cable 2 core -3-4-5-6-8-9-10-12 core 0.2mm0.3mm0.5mm black and white power cord can extend the tensile wire
Amazon.com: Hardware Spring Pressure Spring Wire Diameter 0.8mm Stainless Steel Compression Spring Outer Diameter 6mm Pressure Spring Length 5mm-305mm (Length : 15mm 10pcs) : Industrial & Scientific
Flat Wire Spring for M&P | Ed Brown Products, Inc.
Solid Full Spring Type Cable Puller dia 3.0mm 3.8mm 4.8mm 5.5mm With Double Holes - Distribution board, circuit breaker, fish tape, cable marker,anti vandal switch, Thermostat: ezitown