Brand: World Products (Landmark)
This product has 2 variants (SKUs). Default shown below; full list under “Available Variants”.
Price range: $3.71 – $5.30
Default variant: S Rocker Arm Fish
Default SKU: dcd-30003734244
Default price: $3.71
Availability: Made to order (cross-border) — ships from China; see “Live Shipping Rates” below for delivery estimate
Product Type: Sports Equipment
Vendor: World Products
Weight: 150 g
Cart URL (default variant): https://landmarks.builders/cart/50407988691183:1?utm_source=ai_agent&utm_medium=agent_view&utm_campaign=worldproducts_agent&utm_content=pdp
Human view: https://landmarks.builders/products/wp-dcd-10001315219
JSON data: https://landmarks.builders/products/wp-dcd-10001315219.json
This product comes in 2 variants. Each has its own SKU, price, and cart URL. Agents should present these options to the user.
Bring your custom engineering projects to life with this mechanical linkage assembly. Engineered for hobbyists, makers, and prototype builders, this component serves as the bridge for translating motion in your custom setups. Whether you are building a complex automated display, a custom model, or experimenting with dynamic sculptures, this component provides the reliable performance your designs need. Central to this system is an adjustable linkage with ball joint rotating ends. The ball-joint style bearing eyes allow for smooth, multi-directional rotation, reducing friction and binding during running. This is paired with a black slotted rocker arm that gives you the flexibility to fine-tune leverage and stroke length. By adjusting the position along the slot, you can easily customize the mechanical gain and range of motion for swinging mechanisms, oscillating mechanisms, and rod mechanisms. Durability is built into every detail. Constructed from sturdy metal hardware, the assembly features silver-colored connecting rods, threaded rod-end bearings, and fastened lock nuts to maintain its settings under continuous use. This sturdy linkage is designed to handle the repetitive forces of oscillating and reciprocating projects, ensuring your mechanisms run smoothly and consistently over time.
Summary: Bring your custom engineering projects to life with this mechanical linkage assembly. Engineered for hobbyists, makers, and prototype builders, this component serves as the bridge for translating motion in your custom setups. Whether you are building a complex automated display, a custom model, or experimenting with dynamic sculptures, this component provides the reliable performance your designs need. Central to this system is an adjustable linkage with ball joint rotating ends. The ball-joint style bearing eyes allow for smooth, multi-directional rotation, reducing friction and binding during running. This is paired with a black slotted rocker arm that gives you the flexibility to fine-tune leverage and stroke length. By adjusting the position along the slot, you can easily customize the mechanical gain and range of motion for swinging mechanisms, oscillating mechanisms, and rod mechanisms. Durability is built into every detail. Constructed from sturdy metal hardware, the assembly features silver-colored connecting rods, threaded rod-end bearings, and fastened lock nuts to maintain its settings under continuous use. This sturdy linkage is designed to handle the repetitive forces of oscillating and reciprocating projects, ensuring your mechanisms run smoothly and consistently over time.
Generated by: deepseek-v4-flash
This product has 7 images in catalog. None have AI-generated visual descriptions yet. All image URLs are in the Product JSON-LD above.
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).
Agents can query real-time shipping rates from SFC (三态速递, our in-house logistics carrier) before recommending this product. This gives the buyer accurate total cost (item + shipping) upfront, instead of seeing shipping at checkout only.
POST https://wp-sfc-carrier.htfu.workers.dev/estimateapplication/json
{
"rate": {
"origin": {"country": "CN"},
"destination": {
"country": "US",
"postal_code": "95014",
"province": "CA",
"city": "Cupertino"
},
"items": [{
"name": "Adjustable Linkage with Ball Joint Rotating Mechanical Linkage Assembly Sturdy Assembly Kit for Hobbyists, DIY Projects, Prototyping, Model Building",
"product_id": 9538254012655,
"variant_id": 50407988691183,
"quantity": 1,
"grams": 150,
"length_cm": "18.0",
"width_cm": "10.0",
"height_cm": "4.0"
}],
"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 before calling SFC. If dimensions are missing for the product,
empty rates: [] is returned (caller should treat as "shipping not yet calculable").