.50 Caliber Twist Pen Kit - Gold .50 Caliber Twist pen kit with an imitation bullet cartridge. Gold plating with copper tip. Tooling Requirements: Bushing : 0.50 Caliber (A0313) Drill Bit: 7mm *Refills: Cross Style *Included in the kit *Brass Tubes: .50 Caliber (A0092) *Included in the kit Instructions - Download here
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