Hello I bent my chuck key and need a new one. I bought this from Amazon but it doesn't fit very well. Its too big and I can't seem to find a description that I can understand for chuck keys. https://www.amazon.co.uk/gp/product/B000NDKUJK/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 This is the angled drill I own http://www.screwfix.com/p/makita-da3010-450w-angled-drill-driver-110v/24236 Thanks
Only sure way to get teh correct key is to either get it direct from Makita, or go to a decent size tool retailer with the drill and buy two! You have to look at the pin diameter and the tooth shape and make sure it is a very snug fit.
I think the Makita part number is 763415-9 https://www.partshopdirect.co.uk/makita-chuck-key-s10-p763415-9/ or https://www.mtmc.co.uk/Makita-DA3010-Spare-Parts__p-75547.aspx