Knipex 9K001954US 4 pc. Internal/External Retaining Ring Pliers, Straight & 90

44 21 J01   8-13-Range - 5/16" to 1/2" - Tip Diameter - .035"   0,9 Internal 90 degree, 
44 21 J21  19-60-Range - 3/4" to 2 3/8" - Tip Diameter.071   1,8 internal 90 degree
46 21 A01  3-10-Range - 1/8" to 3/4" - Tip Diameter   .035 0,9 external 90 degree, 
46 21 A21  19-60-Range - 3/4" to 2 3/8"- Tip Diameter  .071"  1,8 external 90 degree