A Viper Nose quad tine from CTI (Ceres Turf) with a 3/8" mount. It measures 5" (127.0 mm) overall, with a core (inside) diameter of 0.250" (6.4 mm), an outside diameter of 0.376" (9.6 mm) and a wall thickness of 0.063" (1.6 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.