our upper die is screw on, the screw is M8, about 7.5 mm, the lower die is no screw, the hole in the machine for the die is about 19 mm. 

Specification:

this die set is compatible with our hand press machine KQ-H020. and the other hand press machine as  NXJ, KAM, WUXING, QJ MARK.  

 for other hand press machine, please contact us

about Handling time and shipping time:

please pay attention to that our handling time is 5 days. our die sets  are not volume-produce, we make them one by one in order to fit the rivets, snaps, eyelets ect. so we need a little more handling time. if you are in urgent to get the item. please contact us first and check if we can send them out in short time.

for most of our items. the shipping method is Economy Int'l shipping like e-pack, will take about 10 days or more to arrive.

14 day return policy, Buyer pays return shipping, All shipping charges are nonrefundable

we are small company with 8 years history, located in South China, making machines and die sets, also sell rivets snaps ect.

I'm Sylvia Li, now running our Ebay shop. I'm 33 years old, Mother of a little girl. I work in this company after my graduating from university. 

my everyday work is about machines, die sets, rivets, spikes, studs, snaps eyelets ect,  If there is any questions about them, please feel free to contact me, i believe we can do the job well.

thanks for reading :)