The installation diameter of all these six bits is 3.5 mm. All these bits are made of a 3.5 mm steel bar. But most screwdrivers (handles) have a 3.0 mm mounting hole. I hardly picked up a suitable pen from my old pens, so as not to buy new pens or drill old pens. This problem would not be if Banggood indicated the installation cylindrical size of these bits in Listing. But in Listing, unfortunately, this size is not specified. Therefore, I was mistaken by buying these bits that did not fit my screwdrivers (pens). Be careful.

The installation diameter of all these six bits is 3.5 mm. All these bits are made of a 3.5 mm steel bar. But most screwdrivers (handles) have a 3.0 mm mounting hole. I hardly picked up a suitable pen from my old pens, so as not to buy new pens or drill old pens. This problem would not be if Banggood indicated the installation cylindrical size of these bits in Listing. But in Listing, unfortunately, this size is not specified. Therefore, I was mistaken by buying these bits that did not fit my screwdrivers (pens). Be careful.

The installation diameter of all these six bits is 3.5 mm. All these bits are made of a 3.5 mm steel bar. But most screwdrivers (handles) have a 3.0 mm mounting hole. I hardly picked up a suitable pen from my old pens, so as not to buy new pens or drill old pens. This problem would not be if Banggood indicated the installation cylindrical size of these bits in Listing. But in Listing, unfortunately, this size is not specified. Therefore, I was mistaken by buying these bits that did not fit my screwdrivers (pens). Be careful.

Well finished you can use these as replacements or as as I have done made extra smaller handles to get get into more fiddly areas. My handles are 40mm long.

Well finished you can use these as replacements or as as I have done made extra smaller handles to get get into more fiddly areas. My handles are 40mm long.

Well finished you can use these as replacements or as as I have done made extra smaller handles to get get into more fiddly areas. My handles are 40mm long.

best RC. tool , last for ever

best RC. tool , last for ever

best RC. tool , last for ever

precyzyjnie wykonane narzedzia

precyzyjnie wykonane narzedzia

precyzyjnie wykonane narzedzia

These arrived today and a very good quality. My only issue is they don't fit the handles I have. Fortunately I have a few handles they do fit.

These arrived today and a very good quality. My only issue is they don't fit the handles I have. Fortunately I have a few handles they do fit.

These arrived today and a very good quality. My only issue is they don't fit the handles I have. Fortunately I have a few handles they do fit.

Muy buena calidad, parecen resistentes. No creo que se pase la forma de la punta tan facilmente como en otros destornilladores baratos

Muy buena calidad, parecen resistentes. No creo que se pase la forma de la punta tan facilmente como en otros destornilladores baratos

Muy buena calidad, parecen resistentes. No creo que se pase la forma de la punta tan facilmente como en otros destornilladores baratos

Good fit, seems good quality. Not yet used extensively, but as for now, I really like them!

Good fit, seems good quality. Not yet used extensively, but as for now, I really like them!

Good fit, seems good quality. Not yet used extensively, but as for now, I really like them!

Die Shäfte zum auswechseln ist eine super Sache. Halten auch richtig lange durch wenn man sie ordentlich behandelt

Die Shäfte zum auswechseln ist eine super Sache. Halten auch richtig lange durch wenn man sie ordentlich behandelt

Die Shäfte zum auswechseln ist eine super Sache. Halten auch richtig lange durch wenn man sie ordentlich behandelt

muito bom

very good

muito bom

Ajuste perfeito

Perfect fit

Ajuste perfeito