Tightly Wound Steel Extension Spring with Hook Ends for Mechanics

Brand: Send From China
This product has 12 variants (SKUs). Default shown below; full list under “Available Variants”.
Price range: $0.92 – $1.26
Default variant: 3x16x136.5mm - 1 piece
Default SKU: dcd-30003819615
Default price: $0.96
Availability: Made to order (cross-border) — ships from China; see “Live Shipping Rates” below for delivery estimate
Product Type: Hardware
Vendor: World Products
Weight: 80 g
Cart URL (default variant): https://sendfromchina.ai/cart/50457630933231:1?utm_source=ai_agent&utm_medium=agent_view&utm_campaign=worldproducts_agent&utm_content=pdp
Human view: https://sendfromchina.ai/products/wp-dcd-10001344394
JSON data: https://sendfromchina.ai/products/wp-dcd-10001344394.json

Available Variants (12 SKUs)

This product comes in 12 variants. Each has its own SKU, price, and cart URL. Agents should present these options to the user.

Description

A heavy-duty black hardware component designed to provide reliable resistance to pulling forces in various mechanical setups. Crafted from high-quality spring steel to ensure excellent elasticity, durability, and long-lasting performance under tension. Features a tightly wound cylindrical coil body with a 3.0 mm wire diameter, functioning as a highly efficient extension spring. Equipped with sturdy hooked ends on both sides, making it an ideal tension spring that securely attaches to connection points. Engineered for mechanical assemblies and workshop repairs, this pull spring delivers the necessary force for smooth return actions.

Agentic Product Page

Summary: A heavy-duty black hardware component designed to provide reliable resistance to pulling forces in various mechanical setups. Crafted from high-quality spring steel to ensure excellent elasticity, durability, and long-lasting performance under tension. Features a tightly wound cylindrical coil body with a 3.0 mm wire diameter, functioning as a highly efficient extension spring. Equipped with sturdy hooked ends on both sides, making it an ideal tension spring that securely attaches to connection points. Engineered for mechanical assemblies and workshop repairs, this pull spring delivers the necessary force for smooth return actions.

Generated by: deepseek-v4-flash

Images

This product has 6 imagesin catalog.None have AI-generated visual descriptions yet. All image URLs are in the Product JSON-LD above.

Category Specifications

How to Purchase

This product can be added to cart via a single URL. Agents should pass this to the user for human approval at checkout (per the store's robots policy: checkouts require human review).

Live Shipping Rates (for Agents)

Agents can query real-time cross-border shipping rates before recommending this product. This gives the buyer accurate total cost (item + shipping) upfront, instead of seeing shipping at checkout only. 

{
  "rate": {
    "origin": {"country": "CN"},
    "destination": {
      "country": "US",
      "postal_code": "95014",
      "province": "CA",
      "city": "Cupertino"
    },
    "items": [{
      "name": "Tightly Wound Steel Extension Spring with Hook Ends for Mechanics",
      "product_id": 9538869526767,
      "variant_id": 50457630933231,
      "quantity": 1,
      "grams": 80,
      "length_cm": "30.0",
      "width_cm":  "13.0",
      "height_cm": "5.0"
    }],
    "currency": "USD"
  }
}

Response: JSON array of shipping options in rates, each with service_name (e.g. "Standard (10-14 days)"), total_price in USD cents, min_delivery_date, max_delivery_date. The estimate endpoint uses the product dimensions provided in the request. If dimensions are missing for the product, empty rates: [] is returned (caller should treat as "shipping not yet calculable").

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