Check the listing for details. JCS Tank Air Equalizer - Din to Din Crossover Assembly, 3FT. Condition: New. Listed at 135.00 USD. Great for Equalizing Cylinders for Maximum Air Availability Marine Grade Chrome Plated Brass Fittings SYNFLEX® 20,000 PSI Burst Host Made in USA Tank Air Equalizer - Din to Din Crossover Assembly ABOUT US: Welcome to JCS, a registered trademark brand of JC Scuba, Inc. We specialize in high quality scuba diving accessories for recreational, commercial, and public safety divers. With JC SCUBA you will find a large selection of quality scuba accessories that are in stock, easy to purchase, and ready to ship for your next dive. We ship FAST (typically within 1-2 business days after receipt of payment). JCS specializes in all scuba diving accessories including:Air Products, Catch Bags, Drawstring Bags, Hawaiian Slings, Equipment Clips, Flags, Floats, Gear Bags, Keepers & Straps, Knives, Scissors, Tools, Lights & Strobes, Line Holders & Reels, Marker Buoys, Wet Suit Cleaning and Care Supplies, Dive Gear Cleaning/Care Supplies, Safety Gear, Spearfishing, Spear Gun Bands, Spear Tips, Tank Accessories, Underwater Hunting, Weight Belts, and MORE. Many products are customizable by size, color, or per your specific needs. Please feel free to Contact Us, or visit our website. We also offer free shipping and other specials on our website! Our scuba diving gear and accessories are manufactured right here in the USA, which guarantees durability and dependability under the most demanding conditions. If you have any questions, need a quote, or would like information about any our product line please use the "Ask Seller a Question" option above, and we will get back to you within 24hrs, or visit our website. Thank you for choosing JCS for your scuba diving accessories needs. We look forward to doing business with you!