PEBA Cable Gland Set Cable Guide Waterproof Adjustable Cable Glands M20 for 4 mm - 12 mm IP68 Cable Connections with Plastic Locking Nut Black (Pack of 10) : Amazon.de: DIY & Tools
OPIOL QUALITY® Hexagonal Nuts Low Form DIN 439 M20 Made of A2 V2A Stainless Steel Flat Nuts Half Nuts Lock Nuts Pack of 20 : Amazon.de: DIY & Tools