“If you have a rpi zero w and need it to have the GPIO headers soldered you have 3 options. Solder them on yourself , buy an overpriced one from Amazon or buy this kit :-) You could use a hammer but i used these https://www.wilko.com/en-uk/wilko-speed-clamp-6in/p/0339068 from Wilko's but there are others out there and you just gently clamp the header to your pi. Easy as pi lol”