Xtreme Precision Black Knurled 5/8-24, 7/8 OD x 5/8 long Thread Protector CNC Machined Steel...7/8 OD x 5/8 Long x 5/8-24 THD Manganese Phosphate...(Parkerized) Made in the USA by Xtreme Precision LLC Buy 10 and get 20% Off..We usually ship same day, no more than 2 or 3 days