The Trimax TCL75 Wheel Chock Lock features an exclusive dual action design. The TCL75 chocks and locks the wheel to prevent trailer roll away. The high-strength pick-resistant locking mechanism with cover helps keep out dirt and grime. Made of heavy-gauge rugged powder-coated steel with rubber-coated arms to protect the wheel finish. The Wheel Chock Lock includes two keys.• Quick and easy installation for all unattended trailers, cars, boats, ATVs, and more• High-strength pick-resistant locking mechanism• Made of heavy-gauge powder-coated steel• Rubber-coated arms protect wheel finish• Exclusive dual action chocks and locks the wheel to prevent trailer roll away• Dimensions: 19" x 13.4" x 4"• 7" opening when locked• 11.25" opening when unlocked• 10.5" reach Made of heavy-gauge rugged powder-coated steel Rubber-coated arms to protect the wheel finish Comes with two keys | Trimax TCL75 Deluxe Universal Wheel Chock Lock, 10.5" Reach