A premium quad tine from CTI (Ceres Turf) with a 3/8" mount. It measures 6" (152.4 mm) overall, with a core (inside) diameter of 0.418" (10.6 mm), an outside diameter of 0.562" (14.3 mm) and a wall thickness of 0.072" (1.8 mm). Hollow tines remove a soil core with each hole. Ceres Turf fitment: JOHN DEERE / TORO (will fit). Fit is listed at the brand level only, so check your machine's tine holder and mount size before ordering.