Adapts 4 or 5 Hole Midwest Hose Connection to Star 430/431/Endura Handpieces. Fiber Optics and Water supported. Choose from 3 models: Non-Fiberoptic 4-hole configuration for motors and high speed use, Fiberoptic glass rod for 5-hole configuration, Fiberoptic ISO 6-hole configuration with LED bulb built in to the adapter. One year warranty. All 100% stainless surgical steel body. Net Wt, .5 0z. Made in Japan.