RAF bomb hoist identification

Hi guys
Can anybody identify the type of the particular portable bomb hoist, shown on the pictures below? (DH Mosquito and Whitley)

It looks quite different than the classic portable winches.

I’m gonna add the bomb hoist on my Whitley (shown above), but these pictures do not help me enough. I need better pics or some drawings. I did searched on web, but i didn’t manage to find better pictures of this type of bomb hoist.

I would appreciate for your help.
By the way…. what color shall i paint a ground crew’s toolbox? Red, O.D, Dark Grey, …?

Cheers
Alex