Review on Precision Engineered SHARS Steel Parallels Pair 303 7203 for Accurate Machining by Jim Cox

Expensive parallels rarely justify their exorbitant cost. These features are good. They're often not "straight," but you just don't need them! The latch on the case is inconvenient to use. We just leave it closed and unlocked next to the power supply. Get used to it every day. Each parallel has two holes.