Not all mini glue guns and mini glue sticks are equal. When I was using my Aldi Workzone gun I needed to put in a new glue stick. I squeezed the trigger half way before any glue came out. Wasn’t sure what the problem was. What I discovered after taking some measurements and doing some research is that the Aldi gun takes 5/16″ (.31″) glue sticks and what I put in was a 9/32″ (.28″) glue stick. it doesn’t sound like much of a difference. But if you try to put the larger glue stick into a smaller glue gun, it won’t fit. And if you put the smaller stick into a larger gun not much glue will come out when you squeeze the trigger. My assumption was that all mini glue guns and glue sticks were the same. Not so. The point is that if you use a mini glue gun, just know what size it is so you buy the right size glue sticks.