This is a Makita cordless electric tacker. I bought it at a home improvement store, but the battery didn't fit, so I'm selling it. It is completely unused, but it seems to have been a display item, so there are some minor scratches on the box and the main unit. Makita's ST113D is a tacker that can use 10mm x 10mm nails. - Brand: Makita - Model: ST113D - Size: 10mm x 7-10mm - Accessories: Instruction Manual Thank you for looking.