The World’S Largest Selling Commercial Rifle Rest. For Prone Position Or Benchrest. Compact And Light. You Won’T Know It’S On The Gun Until You Need It. Barrel Height From 9 To 13 Inches.WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.