ProSelect Metal Aluminum ID Card Holders For Cages These ProSelect card holders display vital information clearly and can?t be knocked off the cage by pets. ProSelect Card Holders feature a third hook to prevent pets from removing the holder from the crate or wire kennel doors. The heavy-stock aluminum will stay attached to any standard cage. Each Card Holder accepts regular 4x6" Index Cards Used by Groomers, Veterinarians, Vets, Pet Shops, Boarding Kennels, Breeders, etc Note: I do also sell these singly and in lots of 3, 6, 12 and 24 and in a 3"x5" size-see my other listings for other quantities and sizes. Only available through independent retailers Great for professional groomers, veterinarians, home use, mobile groomers, handlers, boarders, kennel workers, breeders, pet shop workers, vet technicians, etc. BRAND NEW! *Beware of other products being sold as new when they are actually counterfeits/fakes, used, returns, re-furbished or older and outdated...we are an authorized, independent retailer; Groomer, Hair Stylist/Barber Pet Supply, etc. Shop and sell only NEW, Top Quality grooming, hair stylist, barber and other miscellaneous products. I sell all kinds of Top Quality Beauty, Grooming products and Pet Supplies from top brands such as Oster, Andis, Laube, Wahl, Mars, Aesculap, Master Grooming Tools, Paw Brothers, Coastal, Millers Forge, Resco, Top Performance, Master Equipment, ProSelect, Guardian Gear, Aria, Intellipet, Total Pet Health, Clean Go Pet, Slumber Pet, Casual Canine, Geib, etc. and all kinds of Bandanas (Hav-A-Hank, etc.), Fitted Bandanas (Hav-a-danna, Amazing Danna Doo rags or Skull caps), USA Made Flags, similar items and a whole lot more in my Store...We are always adding new products so be sure to check it out! I buy in large wholesale quantities / lots at a major discount and pass on the savings to my customers. Yes, I do also sell almost everything I sell in WHOLESALE QUANTITIES at WHOLESALE PRICES...Email me for quote if interested and I will put up an listing for you! If Any Questions, Please Ask Before Buying or Bidding Thank You for Looking!