{
 "mpn": "MA.MR12x45SB2",
 "maker": {
  "name": "Master Airscrew (Windsor Propeller company)",
  "country": "US",
  "role": "factory"
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   "usd": 11.39,
   "kind": "list",
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  }
 ],
 "moq": 1,
 "lead_time": "unknown",
 "hts": "unknown",
 "links": {
  "product": "https://www.masterairscrew.com/products/mr-series-12x4-5-prop-set-x2-black",
  "datasheet": "https://www.masterairscrew.com/pages/mr-drone-propellers",
  "cad": null
 },
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 "maglev": {
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  "directory_ref": null
 },
 "confidence": "VERIFIED",
 "id": "dr-masterairscrew-mr-12x45",
 "name": "Master Airscrew MR Series 12x4.5 Prop Set (1 CW + 1 CCW)",
 "subcategory": "propellers",
 "brand": "Master Airscrew",
 "summary": "California-made glass-fiber composite 12x4.5 multirotor prop pair.",
 "specs": {
  "diameter_in": {
   "label": "Diameter",
   "value": "12 in (304.8 mm)",
   "num": 12,
   "unit": "in"
  },
  "pitch_in": {
   "label": "Pitch",
   "value": "4.5 in",
   "num": 4.5,
   "unit": "in"
  },
  "material": {
   "label": "Material",
   "value": "Glass-fiber-reinforced composite"
  },
  "weight_g": {
   "label": "Weight",
   "value": "21.5 g per prop",
   "num": 21.5,
   "unit": "g"
  }
 },
 "sources": [
  {
   "url": "https://www.masterairscrew.com/products/mr-series-12x4-5-prop-set-x2-black",
   "what": "specs, SKU, price (Shopify .json)"
  },
  {
   "url": "https://www.masterairscrew.com/pages/about-us",
   "what": "made in California"
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 ],
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  "ndaa": "unknown",
  "blue_uas": "unknown",
  "fcc": "n/a",
  "notes": "Maker: products 'designed and manufactured ... in California, USA'. Price per set of 2. Motors and props are not among the critical components enumerated in NDAA FY2020 §848, so no NDAA claim is made either way; check your program's own sourcing rules."
 },
 "category": "drone",
 "subcategory_title": "Propellers",
 "icon": "prop",
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  "thumb": "https://parts.trymaglev.com/img/t/dr-masterairscrew-mr-12x45.webp",
  "source_image": "https://www.masterairscrew.com/cdn/shop/products/MR13-product-image_black_5e1e1d24-df6f-4936-8d31-a4a42ae000f1.jpg?v=1613230310&width=1024",
  "source_page": "https://www.masterairscrew.com/products/mr-series-12x4-5-prop-set-x2-black",
  "background": "removed (Apple Vision)",
  "as_of": "2026-10-29"
 },
 "origin": {
  "code": "US",
  "basis": "made"
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 "hts_resolved": {
  "code": "8807.10.00",
  "typical": true,
  "key": "propellers",
  "basis": "subcategory",
  "confidence": "high"
 },
 "us_duty_by_origin": {
  "as_of": "2026-10-29",
  "rates": [
   {
    "origin": "CN",
    "duty_pct": 37.5,
    "possible_pct": 125,
    "usmca": false
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   {
    "origin": "TW",
    "duty_pct": 10,
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    "duty_pct": 12.5,
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    "duty_pct": 10,
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 "url": "https://parts.trymaglev.com/p/dr-masterairscrew-mr-12x45/",
 "markdown": "https://parts.trymaglev.com/p/dr-masterairscrew-mr-12x45/index.md",
 "equivalents_detail": [
  {
   "id": "dr-kde-cf125-dp",
   "name": "KDE Direct KDE-CF125-DP 12.5x4.3 Dual-Blade (CW/CCW pair)",
   "brand": "KDE Direct",
   "mpn": "KDE-CF125-DP",
   "category": "drone",
   "subcategory": "propellers",
   "summary": "Balanced 3K carbon-fiber 12.5x4.3 blades for KDE adapters; KDE's recommended prop for the 2814XF-775.",
   "origin": "US",
   "origin_basis": "hq",
   "price_usd": 95,
   "price_qty": 1,
   "ndaa": "unknown",
   "blue_uas": "unknown",
   "image": "https://parts.trymaglev.com/img/dr-kde-cf125-dp.webp",
   "url": "https://parts.trymaglev.com/p/dr-kde-cf125-dp/",
   "json": "https://parts.trymaglev.com/api/parts/dr-kde-cf125-dp.json"
  },
  {
   "id": "dr-tmotor-ms1101",
   "name": "T-MOTOR MS1101 Polymer Prop (pair)",
   "brand": "T-MOTOR",
   "mpn": "unknown",
   "category": "drone",
   "subcategory": "propellers",
   "summary": "Cheap 11x4.2 polymer+CF prop pair for small/medium multirotors.",
   "origin": "CN",
   "origin_basis": "hq",
   "price_usd": 13.99,
   "price_qty": 1,
   "ndaa": "unknown",
   "blue_uas": "unknown",
   "image": "https://parts.trymaglev.com/img/dr-tmotor-ms1101.webp",
   "url": "https://parts.trymaglev.com/p/dr-tmotor-ms1101/",
   "json": "https://parts.trymaglev.com/api/parts/dr-tmotor-ms1101.json"
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 "pairs_with_detail": []
}