Couplemate 25mm Shank Tow Balls are Registered as Australian Made

50mm Tow Ball 3500kg

50mm Tow Ball - 3500kg - Long Shank 62mm. Shank 62mm. 22mm Dia.

Tested and Compliant with AS4177.2, Caravan and light trailer towing components

One of the simplest and most practical forms of a tow hitch, the 50mm tow ball provides a good swivelling and fastening action.

Typically, you’d mount the tow ball onto the chassis of your tow bar to pull your trailer or caravan.

Tow Ball Hitches and Receiver Kits

Important: We recommend offroad couplings of all brands use a solid cast receiver hitch. Hollow receivers have a welded tongue that distorts in extreme offroad conditions and under shock loading events on the highway.

Couplemate manufacturers a range of cast tow bar receivers and hitches in Australia and tested to Australian road conditions.

Shank Sizes

• 22mm Diameter
• 25mm Diameter - Australian Made

Testing

All trailer connections must be tested according to The Motor Vehicle Act of 2018. Couplemate tow balls are tested to comply with AS4771.2.

3500kg tow balls satisfy a min force of 8667.59kg required by the Australian Standards.

You may find this video interesting. Watch the computer monitor in the background.

From the Couplemate video, what is 85kN? Answer: The applied load is 8,667.59kg. 

Technical Specs

• Weight- 2kg
• 3500kg rated
• 22mm or 25mm Shank Size
• 50mm Ball Size
• Tested to 85kN
• Thread Pitch is 12 TPI
• Spring washer
• Dimensions- 10cm x 6cm x 6 cm
• Compliant with AS4177.2

Couplemate stocks variants of this product

• 70 mm x 4.5t tow ball
• 50 mm pintle tow ball
• 2 5/16" x 3500kg Tow Balls

Sources: Wikipedia Towing Hitch