Overview Reviews Product Description Vibrant Performance HD Clamp Union Sleeves are manufactured from Hard Anodized 6061 Aluminum. Our Union Sleeves are available in black only. Product Videos Custom Field Product Reviews Write a Review Write a Review × Vibrant Vibrant HD Union Sleeve, for 2.00" O.D. Tubing - Hard Anodized Black Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *