2Pcs Electric Fence Retractable Spring for Agricultural Fencing Accessories
Features:

• Premium stainless steel, Durable Construction for Lasting Performance
  Improved Conductivity
  Easy Installation and Maintenance

Specifications:

• Shrinkage Length(128 coils): 25.5cm/10inch
  Longest Stretch Length: 5m/16.4ft
  Φ 50mm galvanised spring
  Φ2mm spring wire
  Material: Stainless Steel
  Color: Silver
  Weight(2Pcs): 1.02kg

Package List:

• 2 x Spring