Twinny Load 629902140 Adapter brinkmatic The Adapter Brinkmatic from Twinny Load is a handy solution for when you use a classic Twinny Load with pin coupling. but the towbar is unsuitable for mounting a guide sleeve. This may be due to the shape or height of the hook. The Tradapter is mounted on the ball by clamping it with 2 nuts. You can then place the bicycle carrier on top of the square tube with the pins at the bottom through the holes in the foot. For example. the Tradapter is like a towbar on a towbar. Guarantee : 2 years