STANDARD FEATURES Straight or Bent Tip Super Hard Surface Diamond Scribes Hardness Oriented Natural Diamond Tips with 60 Degree Included Angle Diamond Tip is Mounted to a 1.5mm (.06") Diameter by 7.6mm (.30") Long Shank Overall Length is 110mm (4.3") For scribing of marking of hard and super hard surfaces including: Silicon Fired Aluminum Ceramics