Description:
Knurled knobs with internal or external thread.

Material:
- Black thermoplastic
- bush or screw steel 5.8 or stainless steel 1.4305 according to variant.

Version:
- Steel trivalent blue passivated
- stainless steel bright.
- Colour coding: Black grey RAL 7021 requires no colour code
- pure orange RAL 2004 = 1
- signal green RAL 6032 = 2
- traffic blue RAL 5017 = 3
- light grey RAL 7035 = 5
- traffic red RAL 3020 = 6
- colza yellow RAL 1021 = 7.

Variant:
- Internal thread
- steel
- cap colour signal green RAL 6032. Dimensions: Thread D: M8
- D1: 34 mm
- D2: 22 mm
- D3: 31 mm
- H: 36 mm
- H1: 13 mm
- T: 14 mm.