Bluemoona One Pcs - 15X4mm ID Card Badge Hand Held Slot Heavy duty Plier Puncher Punch PVC Tag Generic Lanyard Tool Cosmos Fastening Strap Slot hole lengh in 15mm and width in 4mm. Slot Shape: Obround (like rectangle, but with arcs at both ends) Material:Zinc alloy with chrome coating Color:Nickel Use for punch cardstock, chipboard, photo, ID cards, restaurant POS cards,credentials .etc