A unique design provides for many angular turning, contouring and chamfering operations. The cartridge has 12 indexing positions at 15° intervals. All holders assure proper cutting edge and clearance angles at all indexing points. Two-way adjustable rake for right or left hand turning with 5° cutting angle – positive stop. Tool steel cartridge adjusts every 15º for right or left hand turning, facing or chamfering. 12 positive lock positions. Exclusive positive lock with 2-way force holding insert down and tight against shoulder.