Compass Ball Bearing SKU: Compass Ball Bearing An internal error has occurred SKU: 1104294 $1.99 (0) No Reviews yet Quantity -+ Add to Shopping Cart Details Ball bearing control creates accurate circles up to 12" in diameter. Features positive pencil lock. Complete with pencil, inch, and centimeter guide. DetailsBackDetailsBall bearing control creates accurate circles up to 12" in diameter. Features positive pencil lock. Complete with pencil, inch, and centimeter guide. Reviews 0 BackRatings & ReviewsNo reviews availableBe the first to Write a Review