StoreSMART - Realtor Key Lockbox Tag Holders - Plastic - 10 Pack - Black Header - SPC2858S-REALT-BK-10 Realtors: Put information visitors can see it. Its a great place to put your business cards or contact information. 10 gauge crystal clear vinyl plastic. Flexible and water-resistant. Double reinforced 1" black header. Two wide slot holes ensure that the holder will fit on all locks. Insert signs such as Take Off Your Shoes, Beware of Dog, or office phone numbers.