The 330K three star fine stainless steel probe kit with 10 mil tips includes 330A, 330B, 330C, 330D and 330E. The overall length is 6.Specs amp; FeaturesFine PointsApplication: Great for very fine work, Quality: , Surface Resistivity : Conductive, Shape: NA, Material: SS, OAL: 6 (150mm), Tip Width: .01 (.25mm)