Used as inserts in aerial shells, hummers produce a spinning spray of sparks while emitting their distinctive "whirling" sound. This tooling set includes everything you need to start producing quality hummers that perform consistently. Machined from 6061 aluminum, each set includes a solid rammer, ramming base, tube extender, drill jig, drill bit and brass puller. The drill jig positions the exhaust hole precisely on the tangent of the ID of the case. The ramming base and tube extender are used to produce clay plugs flush with the ends of the tube.
Tube Size 1/2" ID x 1-1/8" OD x 1-1/4" long tubes.
