1. All kinds of functions: both tip cover at the top and bottom of
the item, opened by only one hand,electric. 2. All kinds of choices
and size for different customers� need. 3. All kinds of material:
Rubber wood, stainless steel ,Acrylic,ABS Chrome. 4. we have
grinding cores made of different kind of material such as
Alloy,Stainless Steel,Ceramic.