Econo Derf Needle Holder, Sklar, 4-3/4 in., Blunt, Straight, Serrated with Groove, Finger Rings, Stainless Steel. Econo Derf Needle Holders feature short jaws and delicate serrations that hold small needles and commonly 5-0 and 6-0 sutures. Frequently utilized in ophthalmic, dental, or plastic procedures, the shorter length allows the Derf Needle Holder to be easily controlled in smaller surgical areas. Econo instruments are Sklar's floor-grade, disposable instruments and are sold in bulk quantities. This product is straight with serrated tips, a central groove and a length of 4-3/4 inches.