Rigid plastic. Convenient. Single use. Kit comprises: 1 Miller 0 Premature; 1 Miller 1 Infant; 1 Miller 2 Child; Miller 3 Medium Ad.; 1 Mac 2 Child; 1 Mac 3 Medium Ad.; 1 Mac 4 Large Ad. 1 Chrome Handle, Standard, 1 Nylon Carrying Case. The Lite Blade Kit provides you with a sturdy yet lightweight way to take your disposable laryngoscopes anywhere. Each blade and handle has its own zippered compartment which keeps the blades neatly and securely in place. Replacement blades are available, which provides you the convenience of buying only the quantity you need to keep your set complete. CAUTION: THE LITE BLADE CANNOT BE STERILIZED. THIS PRODUCT IS FOR SINGLE USE ONLY.