Thank you for viewing! This is a set of 4 mask charms featuring various cat designs. The lobster clasps are small, approximately 10mm. Please refer to the second photo for the size and the third photo for the back. This is a handmade item. I make each one with care, but as a handmade item by an amateur, there may be minor scratches, imperfections, etc. Please understand that as this is an amateur creation, there is no guarantee against damage or defects. There may be slight color differences between the photos and the actual product. I try my best to match the colors of the parts, but there may be some variations. The parts are imported, so there may be distortions, minor scratches, color unevenness, etc. Please refrain from purchasing if you are sensitive to these issues or if you are looking for a perfect product. Please note that delivery by regular mail on Saturdays, Sundays, and holidays has been discontinued, and even if shipped on Tuesdays or Wednesdays, delivery may be delayed until the following week. Thank you for your understanding regarding the time it takes for delivery. m(_ _)m