YINETTECH 560PCS Bread Preformed Jumper Cable Wire Breadboard U-shape Solderless Jumper Harness Assortment Kit

My batch did not have many long black ones - I like to use red and black for dc volts and I only have long blue ones its ok though. The rest are great just what you need to make up hobby circuits.

These were a bit of an impulse buy but I have used then a fair bit. Good range of sizes in a handy we box

Might seem an additional expense when you already have standard jumper wires, but makes for much nearer breadboard layouts.