1 1/2″ wide x 1 1/2″ shackle clearance. Brass body. Brass shackle. “B” Keyway. This is the Maintenance & Distribution Division of TXU ( Texas Utilities – a large part of Texas – made up of Dallas Power & Light – Texas Power & Light – Texas Electric Service Company. These are used on gates, switches , meters , right of ways , but not on substations. Some are marked – most not – there must be hundreds of thousands of these in service. These are used in the old TP&L District – been in service for over 30 years. Catalog #: 620.