Feature●10mm x 7mm x 0.7mm Dual Hook Tension nickeling carbon steel Spring Gray 50pcs, Length(Nature State): 10mm/0.4", Total Length: 30mm●Outer Diameter: 7mm/0.28, Color: Gray; Material: nickeling carbon steel●Weight: 66g; Wire Diameter: 0.7mm/0.03"，Total length: 30mm/1.2“●Package Content: 50pcs x Tension Spring; Product Name: Tension Spring●Please see clearly the size and function of this product when you buy it. Thank you for buying! (If you have any questions about this product, welcome to email consultation, we will reply you within 24 hours!)Description 10mm x 7mm x 0.7mm Stainless Steel Dual Hook Tension Spring Gray 50pcs, Length(Nature State): 10mm/0.4", Total Length: 30mm， Outer Diameter: 7mm/0.28, Color: Gray; Material: nickeling carbon steel，Weight: 66g; Wire Diameter: 0.7mm/0.03"，Total length: 30mm/1.2“， Package Content: 50pcs x Tension Spring; Product Name: Tension Spring