Modelling A Spanner

For my next attempt, I am going to try and model a spanner. Using these pictures as reference:

Some obvious challenges with this piece are:
1. That it has a hole at the bottom of the handle.
2. It has a separate moving part at the top.
3. The coiled section at the top.

I start by created a rectangle and a torus. I went on to add more subdivisional divides to the rectangle, and smoothing it off with the 5 key short cut. I then extruded the edges of the rectangle so that I could aline the torus.

I then started working on the actual tool part of the spanner. I struggled with the idea of putting a hole in a square in order to put

To start created the fin-like section at the top, I created a cube, added some subdivisional width to it, and began moving the edges to try and get that curved shape and then I duplicated it, rotated it, and shank it.

To give the tool part of the spanner a more natural look, I grabbed the top section that is curved and dragged it to cover more of the surface area.

To create the twisted bit in the center, I started with making a cylinder and placing it in the gap.

Then I create a torus, thinned it out, and placed it onto the cylinder. Simply duplicating it to create the rest of the rings.

Here's the finished product:

I am quite proud of this one, particularly the handle and the twisted section, but there are things that I wold definitely like to improve on:
1. I would like to make certain areas look smoother, there's a clear divide between certain areas.

2. I would try and use less separate shapes to make the top section.
3. Try and tidy up the edges between the shapes better.