This handmade pen is made from Lacewood, native to South America, with screw-on cap.  It uses a Schmidt 888 fine rollerball refill in black, which is easy to replace when needed, and readily obtained on Amazon, and sometimes at local stationary stores.  It's hand turned on a lathe, sanded, and given a protective varnish. This is reddish-brown wood with conspicuous flecking.  The weight of the pen is comfortable at 43 grams, with 0.54" diameter lower barrel that fits a larger hand well.