Spare brass tubes for the 30 Cal Bolt Action Penturning Kits from Penn State Industries (5) Pre-scuffed, already cut to size tubes per pack Each tube has a 3/8" outer diameter and is 1-31/32” long Use to replace damaged tubes, or to work ahead on your project Compatible with the following Bolt Action pen kits: 30 Cal, Deer Hunter, Bald Eagle Insignia Flag, Salute The Troops, Statue of Liberty Flag, and Ceramic Bolt Action; Also compatible with the 30 Cal Bolt Action pencil kit Spare brass tubes for the 30 Cal Bolt Action Penturning Kits from Penn State Industries. (5) Pre-scuffed, already cut to size tubes per pack. Each tube has a 3/8" outer diameter and is 1-31/32” long. Use to replace damaged tubes, or to work ahead on your project. Compatible with the following Bolt Action pen kits: 30 Cal (PKCP8000, PKCP8010, PKCP8020, PKCP8030, PKCP8040, PKCP8050, PKCP8060), Deer Hunter (PKCP8DHAB, PKCP8DHAC, PKCP8DHAP), Bald Eagle Insignia Flag (PKCP8AEAB, PKCP8AEAC, PKCP8AEAP), Salute The Troops (PKCP8ARAB, PKCP8ARAC, PKCP8ARAP), Statue of Liberty Flag (PKCP8SLAB, PKCP8SLAC, PKCP8SLAP), and Ceramic Bolt Action (PKCP80CGM, PKCP80CCH, PKCP80CBK, PKCP80CBGM, PKCP80CB24); Also compatible with the 30 Cal Bolt Action pencil kit (PKCP8100, PKCP8110, PKCP8120, PKCP8140).