Drop Forged Square Half Coupler Features Versatile range of half couplers for a variety of application requiring the clamping of a single tube Flange Nut Size - M14 Thread x 22mm AF Tee Bolts - M14 thread, Available in Mild Steel or Boron Steel For 48.3 OD Tube size Finish - Zinc Plated Std. Packing - 50 Pcs/Bag, 1500