The Trimax Ultra-Max Wheel Lock is designed to fit almost all 10"-18" wheels, making it ideal security for travel trailers and most RV wheels. This wheel lock is designed to cover the lug nuts to prevent tire removal.• Larger wheel lock adjusts to fit larger wheels• Maximum opening of 14.5"• Clamps snug to wheel• Prongs clamp almost together through rim• Heavy-gauge steel disc covers lug nuts• Coated in weather-proof epoxy paint• Adjusting arm to tighten the disc close to lug nuts on deeper wheels• High-security padlock adds additional protection• Includes 4 keys for padlock and 4 keys for wheel lock Adjusting arm tightens disc close to lug nuts Fits almost all 10"" to 18"" wheels Includes high-security padlock, 4 keys for wheel lock, & 4 keys for padlock | Trimax TWL400 Large Ultra-Max Adjustable Wheel Lock