Our Heavy Duty Rock Grapple is great for sifting through dirt in order to remove rocks. With the tines set at 2–3/8″ apart, you pick up most everything but the dirt. You can also pick up large rocks, logs, brush or just about anything else with these grapples. We use twin 2″ bore by 10″ stroke cylinders rated at 4,000 psi on all of our grapples. The rock grapple comes standard with 3/4 x 6 cutting edge and is upgraded to 1 x 8 edge when optional teeth are added. Up to 65 HP. Cylinder Covers Standard.