... ,E,K,L for the junks washover. 2. Type C,F,H,G for mending the top fish O.D. 3. Type B,D ... use type it can be divided into:1. Type A,E,K,L for the junks washover.2. Type C,F,H ... ,G for mending the top fish O.D.3. Type B,D,I,J,F,G,M,N for hard ... stratum washover or stabilizers washover.Main Models:TypeO.D.(mm)I.D.(mm)Length(mm)Min.hole(mm)Max.washover(mm ...