The Haida HD4834 3 ND filter set is a nice addition to the existing Rear Filter ND kits; it adds three extra ND filters. They are made of tempered glass and feature the excellent Haida multi-layer Nanocoating.
The Haida Rear Lens filters offer significant advantages: no vignetting, low weight.

this set contains:

• • 1 – ND2.7 ( 9 stops delay)
  • 1 – ND3.6 (12 stops delay)
  • 1 – ND4.5 (15 stops delay)

These filters can be used with the following lenses:

• • Sigma 14-24mm F/2.8 DG DN Art Lens for Sony E and Leica L
  • Sigma 14mm f/1.4 DG DN Art Lens Leica L
  • Sigma 14mm f/1.4 DG DN Art Lens Sony E
  • Leica Super-Vario-Elmarit-SL 14-24 f/2.8 ASPH