These are great quality screwdrivers, made for Bulova watches. Be careful as there are many cheap, low-quality ones out there. You can buy a complete screwdriver or only the front blade attachment if that’s what you need. You can also choose to get a set (1 compete screwdriver plus 1 extra replacement blade). 3 circular flat prongs. Please note that I do not accept returns for such tools.
Do not hesitate to contact me should you need any other information.