Lot of 2 Black Plastic Caps (Refer to picture #2 for A,B,C measurements) I.500" ID (A) 1.000" Inside Length (B) 0.065" Wall Thickness (C) Accepts 1-1/2" OD Material, such as metal tubing on antennas, boats, rails, etc. Heavy Duty, Soft, Flexible Plastic Material Glossy Finish High Quality Resistant to moisture, weather, and chemicals Red Caps Also Available (see third picture) - if you would like to substitute red for one or both of the black caps, please send me a message or include a note with your PayPal payment. SPECIFICATIONS ID (A): Because Short Caps are soft and flexible, we suggest an undersized diameter for a tight fit. For example: if your outside diameter is .500” (12.70 mm), use a .437” (11.10 mm) Short Cap. Length (B): Inside length is measured along the side wall to the radius of the closed end, not down the center. Wall Thickness (C): Wall Thickness "C" is measured .250" (6.35 mm) from the open end, increasing slightly toward the closed end. Wall tolerance is ±.010" (0.25 mm). Material: PVC with a glossy finish. Orders generally ship within 24 hours of receiving payment, excluding weekends & holidays We combine shipping! This item will ship by USPS... please be sure to include a P.O. Box, if applicable Illinois sales are subject to 6.5% sales taxInternational Buyers – Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. Please Note: International returns are not accepted and sales are final. Warranty returns on international sales may be accepted on a case by case basis; all shipping costs must be prepaid by the buyer.