Bone spreader osteotome especially designed for taking Chin and Ramus monocortical block grafts. Single end handle can be tapped with a mallet. Markings at 13, 16 and 19mm. D-Contoured tips to avoid fracturing weaker boney wall. Both tray and instruments are made of stainless steel. Kit contains Osteotome Bone Expanders 4.3mm 27mm Scoop, 5.45mm 26mm Scoop, 7.5mm 26mm Scoop, 10.0mm 27mm Scoop, Mallet and Tray. Kit: Osteotome Bone Expanders - 4.3mm 27mm Scoop, 5.45mm 26mm Scoop, 7.5mm 26mm Scoop, 10.0mm 27mm Scoop, Mallet and Tray