Herschel Supply Co. - Survey II. Color Steel Blue Shale Rock. Low Stock. On sale for $99.00. MSRP $110.00.. 5.0 out of 5 stars3 left in stock+2Brand NameHerschel Supply Co.Product NameSurvey IIColorSteel Blue Shale RockPrice$99.00MSRP: $110.00Rating5Rated 5 stars out of 5(1)