A Lentulo spiral is an endodontic instrument used to distribute root canal sealer and cement.Highly flexible rotary paste carrier that easily reaches the bottom of the cavity and eliminates all air. Made of durable stainless-steel. Distributes sealants and cement efficiently. Outstanding flexibility to conform to canal curve. Designed with RA shanks. Lentulo Spiral Fillers are ISO color-coded endodontic instruments built from medical-grade stainless steel and feature right-angle (RA) shanks. The uniform spacing in the fillers spiral construction guarantees a consistent seal or cement distribution even in the most curved root canal.Lentulo Spiral Fillers come in individually-Numbered packs and assortment packs which consist of one of each #: 17 mm, 21.0 mm, and 25 mm lengths and #1 (red), #2 (blue), #3 (green), and #4 (black).