Hornby – Railer/Uncoupler (R620) OO Gauge

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Description

The special Hornby coupling unit allows rolling stock to be connected together, or separated, without having to be touched by hand. If fitted at the beginning of each siding, realistic shunting and sorting operations can be carried out. The shaped base track is designed to guide the wheels into position when you are placing an item of rolling stock on the track (‘railing’ it).

When any two items of rolling stock come together anywhere, other than over an uncoupling ramp, their couplings automatically lock together and when the train is pulled away. Even travelling over uncoupling ramps, the couplings remain connected. When a train is pushed over an uncoupling ramp so that two connected couplings are stopped directly over the ramp, the couplings will automatically disengage and the locomotive can be driven away, leaving behind the uncoupled part of the train.

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Scale Guide

Understanding Scale

The scale of a model is its size as a proportion to the real-life item. For instance, a 1:18 scale model means that every 1 unit of measurement on the model equals 18 units on the real item. If you divide the real item's size by 18, you'd get the size of the 1:18 model. Please note that models can vary slightly in size, as not all real-life items, like cars or planes, have the same dimensions.

Model Cars:

1:12 scale: ~38 cm or 15 inches
1:18 scale: ~25 cm or 10 inches
1:24 scale: ~18 cm or 7 inches
1:43 scale: ~10 cm or 4 inches
1:64 scale: ~7 cm or 2.75 inches
1:76 scale: ~6 cm or 2.3 inches

Model Trucks:

1:12 scale: ~75 cm or 29.5 inches
1:18 scale: ~50 cm or 19.7 inches
1:24 scale: ~38 cm or 15 inches
1:43 scale: ~21 cm or 8.3 inches
1:64 scale: ~14 cm or 5.5 inches
1:76 scale: ~12 cm or 4.7 inches

Model Bikes:

1:6 scale: ~30 cm or 12 inches
1:10 scale: ~18 cm or 7 inches
1:12 scale: ~15 cm or 6 inches

Delivery & Returns

Fast, Tracked Delivery — Worldwide

FREE UK tracked delivery on orders over £200. We hand-pack every diecast model and ship from our Dudley warehouse using trusted couriers: Royal Mail, Parcelforce, DHL and UPS.

✅ Same-day dispatch ✅ Fully tracked ✅ Duties & taxes pre-paid on all international orders

Same-Day Dispatch

Order before 14:00 GMT, Monday to Friday, and we'll dispatch your order the same working day. Orders placed after 14:00 (or at the weekend) are dispatched the next working day. You'll receive a confirmation email with your tracking number as soon as it leaves us — tracking becomes active within 24 hours.

UK Delivery Rates

Standard Tracked: £3.50 (FREE on orders over £200)
Express Tracked: £4.99
Special Next-Day Delivery: £12.99
Special Next-Day (Weekend): £17.99

International Delivery — From £14.99

We ship worldwide, with international tracked delivery starting from just £14.99. Typical starting rates by region:

Europe: from £14.99
United States: from £17.99 — UPS Express from £37.99
Australia & New Zealand: from £17.99
Canada: from £19.99
UAE & Saudi Arabia: from £22.99
Rest of the World: from £24.99

Final rates vary by size and weight. Add the item to your basket for an exact shipping quote.

No surprise customs charges. From 2026, every international order ships with duties and taxes pre-paid — so there's nothing extra to pay when your model arrives.

Countries We Deliver To

We currently ship to the following 90+ destinations worldwide:

Andorra, Anguilla, Argentina, Aruba, Australia, Austria, Azerbaijan, Bahrain, Barbados, Belgium, Bermuda, Bosnia and Herzegovina, Brazil, Bulgaria, Canada, Cayman Islands, Chile, China, Colombia, Croatia, Curaçao, Cyprus, Czech Republic, Denmark, Egypt, Estonia, Faroe Islands, Finland, France, French Polynesia, Germany, Gibraltar, Greece, Greenland, Guernsey, Hong Kong, Hungary, Iceland, India, Indonesia, Ireland, Isle of Man, Israel, Italy, Japan, Jersey, Kenya, Kuwait, Latvia, Liechtenstein, Lithuania, Luxembourg, Macao, Malaysia, Malta, Mexico, Monaco, Montenegro, Netherlands, New Caledonia, New Zealand, Norway, Oman, Peru, Philippines, Poland, Portugal, Puerto Rico, Qatar, Romania, Saudi Arabia, Singapore, Sint Maarten, Slovakia, Slovenia, South Africa, South Korea, Spain, Sweden, Switzerland, Taiwan, Thailand, Turks and Caicos Islands, Türkiye, United Arab Emirates, United Kingdom, United States, US Virgin Islands, Vatican, Virgin Islands (British).

30-Day Hassle-Free Returns

30-day returns on unused items in their original packaging.
Sale items may have different refund terms — please check the product listing.
Hazardous or flammable items are non-returnable for safety reasons.
Arrived damaged, or not arrived within 30 days of dispatch? Email [email protected] and we'll arrange a full refund, exchange or replacement.
Please start all returns by emailing us first — don't return items directly to the manufacturer.
Returns address: Model Universe, 3 Hagley Court North, The Waterfront, Dudley, West Midlands, DY5 1XF, UK.

Read our full Delivery Information and Returns & Refund Policy.