The Extreme Trailers Lightboard Arm Knob and 30mm Block are suitable for all Extreme and Indespension Trailers. They are manufactured by Extreme Trailers at their UK facility.
Sold as a pair of arm knobs and threaded blocks
The Extreme Trailers Lightboard Arm Knob and 30mm Block have a heavy duty ergonomic grip
Available in a choice of colour - see variants
M12 x 40mm thread
With 30mm BZP block to suit 40mm and 50mm width box section
Block length: 40mm
Block width: 30mm
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