And them quad injections can get spicy sometimes!Your slin pin is only going to hold 1ml max...that being said you can buy bigger syringe bodies and get whatever size luer lock needle you want off Amazon....if youre asking what ML max is in regards to how much you can inject per site, that is a personal question for yourself, delts hold 1-1.5ml max for me, quads 2-2.5, glutes hold as much as you can fit in the syringe lol. But these amounts are going to vary person to person...



