38 Clipless Click Pen - 6Al-4V Titanium Recessed Body - Step Nose Grip Lines - C63000 Bronze Mechanism - Uni SXR-5

Please note there is a limit of one item per customer for this release. I have a batch of these ready to go now for immediate shipment. It will take me a few days to get them all shipped out after the release. Thanks for following along, let me know what you think about this design and send requests for future designs.

Design in a 0.38"(9.65mm) diameter with a recessed middle section down to 0.34"(8.64mm). Smooth and tough C63000 Bronze clip less mechanism. Revised work holding and setup process keep mechanism details better in line than previous designs. No o-ring bumper for this design. Spring rates are pretty optimum removing the need for the bumper. Uses a 1/8" (0.125") bearing ball and a custom made precision secondary spring. 

Proper allowance and a custom precision spring allow the refill to operate very smoothly. There is a tight fit between the button stanchion and the mechanism body making it more resistant to binding from pressing the button on an angle. 

Made out of the tough and hard solid bar stock 6Al-4V Grade 5 Titanium. The mechanism comes equipped with stainless steel bearing balls. Tip details are extremely tight with a small land between the refill, and the conical section.

Minimal and clean design coupled with the Mitsubishi Uni Jetstream SXR-5 0.5 mm refill.

Pinch the mechanism between your index finger and thumb to retract the mechanism with a satisfying snap. The click and return is very solid and super satisfying. Tolerances, fit and finish for the mechanism are very close.

Tip point details are very clean with an excellent tight fitting 2.35 mm diameter bore and a tolerance of just 25 micron to keep the refill tip exactly in place.

Higbee thread start to the pen body to make the thread action for replacing the refill better. Added a new locking feature that should keep the mechanism from unscrewing without the need for an o-ring or loctite.

This version is 5.35" (135.89 mm) long, 0.38" (9.65 mm) in diameter, and weighs 21.63 g (0.76 oz).