DMM Impact Block - 3/4" Large



The DMM Impact Block is a premium arborist block designed for incredible strength and premium performance.

The most eye-catching feature of the block is the incredible strength, but it is more than just a rugged piece of gear. The Impact Block is designed to be rope-friendly on all surfaces. The 3/4" version of the Impact block has a hollow stainless steel spindle which opens up advanced rigging options. The lower sheave is over 4" wide for a wider bend radius that preserves more strength in the rigging line.

This premium arborist block is suitable for medium to heavy tree rigging. See the videos tab for an overview as well as videos of the testing process DMM went through to develop the Impact Block.


  • Manufacturer: DMM
  • Maximum rope diameter: 20mm (3/4+")
  • Sheave diameter: 107.95mm (4.25")
  • Tensile strength: 300 kN (67,442.55 lb)
  • Material: aluminum
  • Dimensions: 230 x 125 x 90mm (9 x 4.9 x 3.5")
  • Weight: 3.47 kg (7.65 lb)
  • Made in Wales


  • CE
  • NFPA 1986 (06ED) Class G
  • EN795(b):1997
  • EN12278:2007