The other similar models mostly were a different number to 5. The ones that were a 5 set were all the same length so wouldnt fit these longer ones. I think these are quite similar to a lot of brands so hopefully people will find this useful. I added a wide section along the drill bit so you dont have to put them back with the collar all the way down. I then added a section at the tip to stop the bit teetering and keep it neat. And finally I added a cut out in the ridges to allow easy grabbing.