This is a Leviton quickport brand 6-position modular adapter. Leviton part # 40072-T6. Modular adapters plug into M blocks to convert 66-clip contacts to a modular jack for quick connection of equipment. These products are typically used for testing and temporary connections. These are brand new and in the original factory packaging.   Shipping is $3.90 via 1st class mail.  Additional quanities add only 95 cents each shipping.  If you purchase multiple items, wait until I send a combined invoice with shipping savings before making payment.  Thank you!