Holton MF ST306 Bb Trumpet – Custom by KGUmusicCondition Used Level Profesional Model MF ST306 Bell 124 mm Valve Block Monel Bore Size L 0. 468 (11. 89 ) Finger Rings KGUmusic Design Water Keys Saturn Trim Kit HEAVY Trim Kit Leadpipe Brass Main Tuning Slides Square Finish Patina + high durability clear lacquer, Case MG Leather Work Genuine Leather Gig Bag Accessories Aqua Nozzle, Care Towel, Brushes During customization, the original factory finish was fully removed. All acoustic and mechanical