JBL Universal Accessory Caster Kit The ACK1 is a universal accessory caster kit used for transportation of compatible JBL products. The kit includes four tour grade casters and the hardware necessary for attachment to the cabinet. The housing and wheels are black for a discreet look even in situations where the rear of the product is facing the audience, as in cardioid subwoofer stacks. Each caster has a load rating of 100 kg (220 lbs), and the wheels are made from black polyurethane. For more information on how to attach the ACK1 refer to the product’s Rigging and User Manuals. SPECIFICATIONS General Specifications Construction: High-grade steel with anti-corrosion coating Finish: Black powder coat Caster Size: 76 mm (3 in) Caster Load Capacity: 100 kg (220 lbs) per caster Dimensions Height: 114 mm (4.5 in) Width: 63 mm (2.5 in) Depth: 105 mm (4.1 in) Net Weight: 3.2 kg (6.9 lbs) Shipping Weight: 3.7 kg (8.3 lbs) What's in The Box? 4 x Casters Installation Hardware Manufacturer: JBL ProfessionalModel: ACK1SKU: I709124-N-8-WHXCUPC: 691991035616We are Chuck Levin's Washington Music CenterSince 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.Our team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.Chuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.