1. All brass dragon lairs have several small entrances, known as bolt holes . 2. Many standard SWER poles have several bolt holes to support this upgrade. 3. Use the old board as a pattern to drill bolt holes . 4. Other common damage types include heat damage and bolt hole damage. 5. The bolt holes themselves are often reinforced by steel tubes moulded into the doughnut. 6. Nero, who has since deduced that Marius is Damocles, flees deeper into his bolt hole . 7. The smaller holes usually no more than 8 inches in height are called'Bolt Holes 'or'Smoots '. 8. This block incorporates two extra rows of head-bolt holes per bank for increased clamping capacity. 9. One flattens the end of a strut and drills bolt holes at the needed length. 10. L terminals consist of an L-shaped post with a bolt hole through the vertical side.