Product use: Used for root canal treatment in stomatology, remove the broken root canal file Put on the drawing wire and wind the drawing wire around the top of the handle rod with two circles inside the oblique opening of the needle pre-bent position in the middle of the needle Contents: Extractor 1pc Metal heads(0.4mm outer diameter) 2pcs 0.07mm wire 50 meters Paste delivery heads 20pcs Pistons 20pcs(color will be random) Quantity: You can order the set or single items you want to order