A low-cost alternative when price matters most. Manufacturer: Black Box Corporation. Manufacturer Part Number: CAT6J-BK-25PAK. Brand Name: Black Box. Product Name: CAT6 Value Line Keystone Jack, Black, 25-Pack. Packaged Quantity: 25. Product Type: Network Connector. [Technical Information] Connector Details: 1 x RJ-45 Female Network. 110 Block: Yes. Contact Plating: Gold. [Physical Characteristics] Color: Black. [Miscellaneous] : Yes. Environmental Certification: RoHS. [ ] Limited : 2 Year.