the idea (spring hook) is good, but the outcome is far below all my lowest expectations!
for springs thing, this turned out to be a complete joke, mainly due its miniaturic size and total lack of finish:
* 43mm is t-handle width (orange part);
* 48mm total length (what ends with hook);
* 10mm hook width;
* hook material is 2mm steel wire;
* the tip of the hook is completely blunt, not 2mm in diameter, but 2,3mm as there is burr from cutting. what a good workmanship!
* the whole orange handle has plastic molding flashings everywhere;
* the only satisfactory part was packaging.
when the handle is in hand (between two fingers), the protruding part is (depending on the thickness of your fingers) 5-15mm (in my case about 8mm and i don't have big hands), but the knuckles interfere with gripping anything with it. it is extremely uncomfortable and clumsy to achieve any result with it.
on stretching strings with it?
nogo at all! as the diameter (2mm) is too narrow to not to leave trace on metal strings. good stretcher should be with far more diameter (mine is about 20mm).
the brain giant who designed it has probably never changed the springs on a floating bridge itself.
(any) tool must be:
a) ergonomic - comfortable to use;
b) functional - it must be possible to do what it is intended to (with satisfactory results);
in this case, both criterias are more than unmet.
for spring hook: with same budget: better to buy from local hardware store an ordinary small torx or hexagonal 15cm t-handle screwdriver and bend (and finish) the end as needed. far better result guaranteed!
for string stretching: with zero budget: do it with gloved hands or somehow protected fingers (just to soften strings "interaction" with your fingers) or invest 3x more and buy corresponding tool.
