Enough quantity: come with 10 pack 0.4 mm needle drill bits in total, enough for a long time using
Good material: made of stainless steel, flexible and won't break easily; Comes with a handle, so you can easily twist it in during use
Wide suitable: compatible with most of 3D printers on the market such as Duplicator, MakerBot, RepRap, etc.
Good performance: the drill bits will clear your printer nozzles very well and make it print better
Durable to use: can use heaps of times as it is made of stainless steel with good flexibility, will neither rust nor broken easily