gSource drill guides are manufactured from high quality German surgical stainless steel and are used in conjunction with drills and taps to help place accurate holes for the placement of bone screws and also to protect the tissue surrounding the placement area during orthopedic surgery involving fixation of internal fractures. Available in a variety of working end sizes and styles, including serrated ends to help prevent slipping off bone, and color coded to identify neutral (green) and load ends (gold).