Ideal for woody stems and dead wood, NEW from Spear and Jackson, S & J Razorsharp ergonomic Anvil Pruners are interchangeable. Easy change system with slip and click adjustment. SK5 Tool Steel. Ergonomic Blade angle provide leverage ratio 1:3. Easy, ambidextrous locking catch. Soft feel grips. Interchangeable insert that can be removed to hold Grafting Knife, Sharpening. File or Finger Loop.