Waterproof Cable Glands Set IP68 Cable Glands Connectors M20 Plastic Black, for 3mm-7mm Cable Diameter Cable Glands Joints Connector for Home/Garden/Outdoor Lighting Cable Pack of 10

These seem to be well made glands but the M20-2K version which has two holes for the cables does not fit the 7mm cable that I own. The cable is a standard size 0.75mm^2 3 core flexible cable that is typically used to wire lights. The nominal diameter is 6.5mm although I measure it at 7mm. The headline discription on Amazon claims that the glands are for cables 3-7mm diameter. However the documentation that comes with the pack of glands states that they are for 3-6mm cables. Hence 3 star rating because of misleading description. If you are using 0.5mm^2 3 core flexible cable then the nominal diameter is likely to be under 6mm and hence the gland may work well but note that such cable is only rated at 3 amps. I have also purchased the M20 and M25 products that accommodate a range of cable sizes by supplying multiple rubber inserts for the glands. In both cases the inserts supplied for 4-8mm cables fit 7mm 0.75mm^2 3 core flexible cable.