Bored To Size Styles

For a precision fit that prevents wobbling, slippage, and misalignment, choose BlackStar bored-to-size sprockets.
Precisely machined to fit the specific shaft diameter your application requires, BlackStar bored-to-size sprockets are already bored and keyed for convenient installation and alignment. Offering a snug, accurate fit, Blackstar’s bored-to-size sprockets improve performance and compatibility with your mechanical systems.
For reliable, long-lasting performance, choose BlackStar bored-to-size sprockets.