A premium coring tine from CTI (Ceres Turf) with a 12mm mount. It measures 8" (203.2 mm) overall, with a tube length of 6" (152.4 mm), a core (inside) diameter of 0.521" (13.2 mm), an outside diameter of 0.875" (22.2 mm) and a wall thickness of 0.125" (3.2 mm). Hollow tines remove a soil core with each hole. Ceres Turf fitment: TORO SR (will fit). Fit is listed at the brand level only, so check your machine's tine holder and mount size before ordering.