Perfect for rivets (not included) the hole is 3.5mm for the post and the engraving will fit between 8mm rivet heads.
For best results 8-10 characters only.
LOGO's: Fine/small details might get lost on tags, to endure your logo will work please email it to firstname.lastname@example.org or message it to my FACEBOOK page. VECTOR files work best. (AI, CDR, SVG, DXF) Any files send in another format MAY need extra work which could result in a design fee.