One of the screws with turny knobs on the end has gone missing from our burley solo trailer (they screw into the roll bar). It looks like the ones in this picture:

Anyone know what they are called or where I can get one from? They must be generically sold somewhere?

Axminster tools sell them. On phone but have a browse in their jigs section.

Yeah as long as you know the thread size (measure the girth of the bolt, probably around 6mm – M6) then you should be able to pick up a similar thing as mentioned above.

Hand/Thumb screws

Take your pick: http://www.wdsltd.co.uk/categories/65/hand-knobs-thumb-screws

(just found that site, looks quite useful actually!)

otherwise places like RS will do them.

Cheers guys I’ll check those out.