Check the listing for details. Bulk Sale 30Pcs Dental Endodontic Material Pure Titanium Screw Post 20 Sizes. Condition: New. Listed at 12.68 USD. 30Pcs Dental Pure Titanium Assorted Conical Screw Posts Root Canal Pins All Size Product Description 1. Made from the imported pure titanium, which is tissue compatible and is the metal mostly recommended for human implants. 2. Refills of All size 3. Totally Brand New in the Bag total 30 pcs How to Use Screw Posts Use a reamer that will match the selected screw post. The root canal should be enlarged with the reamer and deepened to desired depth. Eccentric movement of reamer should be avoided. Using key, the post should be screwed into the root to check the length of the canal. When this is done remove the screw post. After cleaning and drying the root canal and the post, the post is dipped into cement and screwed home. A screw placed in the mesial and distal canals gives a good anchorage. Screw posts give this possibility, because of the good variation in sizes. the avaliable sizes as below: S1, S2, S3, S4, S5, S6, M1, M2, M3, M4, M5, M6, L1, L2, L3, L4, L5, L6, XL4, XL6 you can choose quantity by yourself.any questions pls contact me.