Originally Posted by
SEK22Hornet
I'm going to throw a couple things out here - first, if your collet stays in the spindle cap when when you unscrew it, I'm going to guess that you have an ER type collet. Most of the 800 watt spindles I just saw on ebay have ER type collets. These come in several sizes starting at ER8 and going up from there. This is the outside size of the collet - not the size tool it holds. From what I saw just now when I did a little looking, I'd guess you have an ER 11 spindle. If so, you can get collets for it on ebay or amazon for about a buck each or sets run about $10 and up. The cap of the spindle may be marked as well.Only a guess on my part you really need to find out what type of collet your spindle takes.