Rupps Drums Shop Main Shop > Hardware > Sonor Hardware > Sonor 4000 Series Hardware Sonor Mini Boom Arm MBA 4000 Click for larger imageSKU Number: MBA 4000 MSRP: $79.00 You Save:$30.00 Rupps Price: $49.00 Quantity: Sonor 4000er Series Professional, road-ready hardware at an unbeatable price. Features: Equipped with lots of individual components, the 4000 Series is easy to set up, adjust and tear down. All 4000 cymbal stands/ holders feature a new quick release, which makes change of cymbals and setting quick and easy. Cymbal threads SONOR changed all cymbal tilter threads from 6mm to 8mm industry standard. The new cymbal tilter can be infinitely adjusted at any angle. The new lever screw adjusts the tilter with stronger force and can be moved out of the cymbals way independently.All cymbal stands/ holders feature retractable, knurled boom arms. They can be set straight or as boom arms to enhance your setting possibilities. New wing screw/ wing nuts design enforces grip on every connection (except the cymbal tilter).