Powder drum.
7/16" diameter, 5/16-24 thread.
Drilled for nipple 1/4-28 thread

Powder drum.
1/2" diameter, 5/16-24 thread.
Drilled for nipple 1/4-28 thread

Powder drum.
12.5mm diameter, 10-1.25mm thread.
Drilled for 6-1mm nipple

Powder Drum
1/2" diameter, 5/16-18 thread
Drilled for nipple 1/4-28 thread

Powder Drum
7/16" diameter, 5/16-18 thread
Drilled for nipple 1/4-28 thread

Powder Drum
7/16" diameter, 3/8-16 thread
Drilled for nipple 1/4-28 thread

Powder Drum
13MM Diameter, 8-1.25mm thread
Drilled for nipple 1/4-28 thread