• This unique brush is designed to be used with Cotey Chemical's well cleaning products. • Is an all purpose brush for use in all types of casing and screen. • Can be used on a cable or pipe. • Is self cleaning - allows scale particles to flush out. • It has floating brushes to insure movement which helps eliminate sticking brush in casing. The J200 WELL CLEANING TOOL has interchangeable brush sizes for 4" to 6" casing. (Patent Pending). The J400 WELL CLEANING TOOL has interchangeable brush sizes for 8" to 16" casing. (Patent Pending). For more information call today! 800-457-2096 or 806-747-2096 or fax 806-747-7138 or www.coteychemical.com.Cotey Chemical Corp. Card No. 305