Adjusting and locking the ALBM is fast and easy with integrated receiver and adjustment locksClass V - 1,500 lbs tongue, 10,000 lbs trailerAircraft grade high strength billet aluminum body pieces are machined from one solid piece, no welds or seams to fatigue and break2" and 2-5/16" chrome plated double ball is one piece and internally pinned so it can't loosen up and will outlast inferior zinc plated or aluminium ballsO-ring sealed stainless integral pins are oversized and interally overlapping of rmaximum strength, safety and corrosion resistanceIntegrated dual self lock with high security trouble free barrel type keys and heavy duty rubber seals. No need for other pins or keepers