The Knuckle Duster Mug
The Knuckle duster mug is a edgy mug for those who want something a little different to drink their cuppa out of and who understand the irony behind this design!
7 Gadgets
Daily News about Gadgets and Design
if want more pack to your punch of coffee check this one out;
http://www.roseapodaca.com/blogs/Forget_Brass_KnucklesGo_For_the_Gold.html