High quality product as used by BT engineers, made by Dexgreen. The wires do not need to be stripped as the IDC connection in the crimp does that for you. They are very simple to use, insert one wire in each hole and just squeeze down using pliers.
eBay
For 8mm 2 pin 3835 5050 3528 LED strip connector,plug connector cable, flexible COB LED Tape corner connector, quick connector
Aliexpress UK
BE AWARE OF FAKE 'CAT6'/'CAT6a' CABLES AVAILABLE ELSEWHERE. BT MINI CONNECTORS ARE NOT. The cable is shielded with foil and features twisted pairs for maximum signal integrity. Connectors are gold-plated pin connectors that are shielded to reduce CRC.
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5Pcs Waterproof Cable Connector 3 Pin Wire Connector 3 Way Inline Wire Connector Push in Connectors Electrical Terminal Quick
Aliexpress UK
Suitable for use with either 2 or 4 wire cables. High quality product not like the cheaper versions.
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ZoeRax Colorful RJ45 CAT6 Strain Relief Boots Connector for Standard CAT6 Ethernet Cable LAN Cable Connector Boot Cover
Aliexpress UK
【Compact and Lightweight】: BT2.0 U Shaped Power Cables, compact, integrated structure shortens power cable length, reduces overall weight, and ensures a tidy fit for 1S. 【1.0mm Banana Connectors】: BT2.0 connector uses 1.0mm banana connectors with increased cross sectional area to significantly lower internal resistance.
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5 Pairs DC 12V Connector 5.5x2.1mm Male and Female DC Power Socket Jack Connector Cable Plug Wire DIY Creative DC Cable JIENUO
Aliexpress UK
These are very high quality clear plugs to see where you are inserting the wires.
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12-24V 18AWG SAE 2 Pin Quick Disconnect To O Ring Terminal Harness Connecter Cord Connector Cable for Battery Charger
Aliexpress UK
BT 431 Plug to RJ11 Plug. Length: 1m solid copper Cat5e Cable. High Quality Connectors Cable sent in WHITE.
eBay
Flexiable Double End 3Pin 30-200cm T8 / T5 Cable Wire Connector For LED Integrated Tube Light Cable & Connectors
Aliexpress UK
High quality product as used by BT engineers, made by Dexgreen. The wires do not need to be stripped as the IDC connection in the crimp does that for you.
eBay
Cable Connector Adapter XT60 to O Ring Eyelet Terminal Plug Connector Cable 10AWG Silicone Wire Charger For RC Lipo Battery
Aliexpress UK
BT version:5.0. 1 BT Aux Cable. Connected to car stereo via wire harness, no interference and no loss of sound quality. Small and light, easy to carry. If you are satisfied with our service, pls.
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280 Pcs Electrical Cable Connectors Assorted, Insulated Wire Cable Crimp U-Type Fork Spade Butt Ring Connector Assortment Kit
Aliexpress UK