This is the center piece for the custom Sierra style pens. the lower tube fits into an 8mm tube and the top fits the standard 10.5mm upper tubes. You can tap the upper with an 8.4x1mm tap or solder an 8mm tube in and trim it to fit an 8mm transmission coupler.
Siera style center band For a click Pen
Thincker than 3017 so that the outside may be threaded.
Aprox .500 (1/2 or 13mm) this makes the basic custom Sierra style center band piece. It can be threaded 8.4mm x 1 for the standard trans mission or have a 8mm tube soldered in and trimmed to fit. the lower end fits into an 8mm standard tube using one of our 8mm nibs. The tube length is adjusted according to your design and length of the transmission tube. the upper end fits into the standard Sierra style 10,5mm body tube.