ReedGeek Black Diamond "G4 The G4 is the latest and newest member of the ReedGeek Universal family. It utilizes unique, state of the art, 100% USA alloy. Exciting features include a newly designed length with added heft, a refined "pencil eraser" radius tip and a comfortable rounded back scraper which offers further pinpoint scraping options. It offers four crisp planing edges and two new, elongated, contoured and curved rail bevels, which are specially designed to profile rails and re-contour the spine of both single and double reeds. The G4 is available in our beautiful black diamond wear finish, which provides ultimate refinement of the cut on both natural cane and synthetic reeds.