Specification:Color: black, white, wood, silver,gold Material: Piston Valve Repair Kit :copper,metal,plastic Button Connecting Rod Set : all bronze Size:Piston Valve Repair Kit: 40 x 10 mm/1.57 x 0.39 inch (L x D) Button Connecting Rod Set :17 mm /0.67 inch (D) Weight:86gFeatures:1.Piston Valve Repair Kit of Size: High waist spring: length about 40mm, diameter 10mm cork pad: diameter 9mm thickness: 3mm black felt: outer diameter 18mm inner diameter 9mm white felt: diameter 15mm inner diameter 5mm rubber ring: outer diameter 12mm inner diameter 10mm spring support: length 18mm width 11.2mm Inner diameter 4.4mm.2.Piston Valve Repair Kit:Scope of application: Suitable for three-tone B-flat trumpet / cornet / B-flat palm trumpet piston spring support trumpet.3.Piston Valve Repair Kit:High Waist Spring: Contraction with tension. Stronger and more . Precise positioning and ensure coaxiality, good feel.4.Button Connecting Rod Set of Product size: button diameter (about 17mm/ 0.67inch), total length of connecting rod: 26mm, button screw diameter 2mm.5.Button Connecting Rod Set:Scope of application: It is suitable for the replacement of small piston snaps.Package:3 x high waist springs6 x white felts6 x black felts4 x cork pads2 x rubber rings1 x Button Connecting Rod Set