Check the listing for details. Mul-T-Lock Solid Master Disk External Master Pins Full Pin Kit Locksmith. Condition: New. Listed at 8.00 USD. Mul-T-Lock External Solid Disk For Master Pins Up for your consideration are original Mul-T-Lock internal disk for master pins in a size and quantity of your choosing. They are brand-new and ready to be used to add master keying options to Mul-T-Lock Junior, Classic, Interactive, and Interactive+ products! We offer all three sizes of these pins individually in bags of 20 or 50, as well as full sets of all four sizes made using bags of 20 or 50 pins each (60 or 150 pins total). Make sure to choose the exact variation you want before purchasing. Available pins include: External Solid Disk for Master #1 (4 x 0.7)External Solid Disk for Master #2 (4 x 1.2)External Solid Disk for Master #3 (4 x 1.7)These pins are brand-new and have been sourced from a vintage Mul-T-Lock pin kit that can be seen in our photos. Please contact me with any questions. If you are looking for other types of Mul-T-Lock pins or a complete set of master pins, check out our store and see our other listings!