Lyman Flash Hole Uniformer

Lyman Flash Hole Uniformer. In brass manufacturing the flash holes are sometimes left with a burr partially obstructing the opening with possible negative effects on accuracy. This handy tool removes internal flash hole burrs and chamfers at the same time. Features a tool steel cutter which is inserted into the flash hole through the case neck. Adjustable stop collar allows use with any size case up to 3 1/4" long.