Precision machined in Titanium for maximum strength yet lightweight; the Mako dart shafts are re-machined with an impressive and aggressive shark grip. Mako dart stems are crafted from Grade 5 titanium, known for its exceptional strength and resistance to fatigue. Cross holes for tightening, and O Rings are included for a superior shaft-to-barrel fit. Designed for use with 100 Micron or lower Flights.Sold in sets of 3.Measurement: Does not include thread.