I have this 4 ½” a 20 ft. Foremost CSR Reverse Circulation drill pipe for sale. It is early 90’s but many rigs still use this type. It is in Guatemala. It has drilled 6 holes. Treads are new , still see machining marks. Only has surface rust because sitting outside. I have 32 pieces , 640 ft. would like 450.00$ per piece,or make offer. Would be great to direct send direct to Mexico. We can get to border.