Product review (4 stars): Good for the price
Four stars for the quality versus price.  Not for fine furniture but for other applications they suffice.  I built mail slots for a school and mounted these  vertical next to each slot.  I purchased these because they will fit on a 3/4" wide surface.  No problem sliding a label of thick paper or thin poster board in from the side.  Some needed to be straightened a bit and the elevated part, where the label slips in, can be bent in if hit hard enough after it's mounted.  Just enough screws for each tag so pre-drilling is an absolute must in hardwood.  I pre-drilled in pine to prevent any little bit of screw stripping.  I received these within days, from Hong Kong, so go with the cheaper price and free shipping if it's still available.