Tech Tip: Positive rake bits usually have 3 cutting edges, have a tapered shape to them, and are installed on a flat tool holder. Negative rake bits can have 12 cutting edges, are square with the edges, and are used with an angled tool holder.
Please Note: While SPC does not offer direct on-site service of vehicles, our experienced techs are here to help answer any alignment questions you may have through our email form and FAQ section.