JOEPRO
Member
- Messages
- 4,439
- Location
- UK
Just got these on the way home from USA. Made in USA:

The way these work is you apply torque with a spanner (aviation or otherwise) and use an air hammer to transfer the impact into the bolt to help break any grip rust may have.
Not a great demo but the Idea here:
I seen some versions available on amazon UK but they looked "too cheap" and probably would twist apart in use.
These are very interesting to me for removing very rusted car suspension bolts and similar. And any large Allen drive fixings like diff support bolts that MB love to use.
I will report back on how well these work when I get to use em in a few weeks time. I have a very rusty w124 coupe to pull the whole suspension out of for restoration.
Thinking about it these will work on flange nuts / bolts very well. But for regular bolts I would need stubby type impact sockets so they pass the impact blows to the fixing only.

The way these work is you apply torque with a spanner (aviation or otherwise) and use an air hammer to transfer the impact into the bolt to help break any grip rust may have.
Not a great demo but the Idea here:
I seen some versions available on amazon UK but they looked "too cheap" and probably would twist apart in use.
These are very interesting to me for removing very rusted car suspension bolts and similar. And any large Allen drive fixings like diff support bolts that MB love to use.
I will report back on how well these work when I get to use em in a few weeks time. I have a very rusty w124 coupe to pull the whole suspension out of for restoration.
Thinking about it these will work on flange nuts / bolts very well. But for regular bolts I would need stubby type impact sockets so they pass the impact blows to the fixing only.