uxcell M32x1.5 Cable Gland 16mm-21mm Wire Hole Waterproof Nylon Joint Adjustable Locknut with Washer Black 10pcs - Amazon.com
10Pcs M20x1.5 Cable Glands Plastic Joint Adjustable Waterproof Connector with Washer Fixing Device: Amazon.com: Tools & Home Improvement
Amazon.com: Fielect 4Pcs M20x1.5 Cable Gland Plastic Waterproof Cable Glands Joints Adjustable Connector Black for 6-12mm Dia Cable : כלי עבודה ושיפוץ ביתי