Self Aspirating Syringe Winged. Lightweight, Ergonomic. Contains no removable parts and accepts 1.7 / 1.8 ml dental cartridges. 8 cartridges 3.Increases user control 4.Lightweight design prevents hand stress. Compatible with 1.7 and 1.8 cartridges. Increases user control. Lightweight design prevents hand stress. ECO Self-Aspirating Anesthetic Syringes are ergonomic syringes for injection of local anesthesia. The medical-grade stainless steel construction enhances instrument durability, while the lightweight design minimizes hand fatigue during procedures.ECO Aspirating Syringes do not contain removable parts, making them safe for all types of injections. They are suitable for 1.7 ml and 1.8 ml cartridges.Available in winged and wingless designs.