CNC machined from solid aluminum (aircraft grade) bar. Adjustable machined hoods will accept 30-130 lb class rods. The delrin collar nut is designed so it will not come loose.Available in #2 short (18 1/2")™️or long (20 1/2"). Ferrule I.D. is 0.88" or 22.38mm.Now available in #4 short (19") or long ..