... washover. 2. Type C,F,H,G for mending the top fish O.D. 3. Type B,D,I,J,F,G,M,N ... washover.2. Type C,F,H,G for mending the top fish O.D.3. Type B,D,I,J,F,G,M,N ... hard stratum washover or stabilizers washover. Main Models:TypeO.D.(mm)I.D.(mm)Length(mm)Min.hole(mm)Max.washover(mm)TXZ117117 ...