Official Al Cass Fast Valve, Slide & Key Oil | 2 oz Bottle | Odorless, Non-Gumming Lubricant for Brass Instruments | Trusted by Professionals | Made in USA (2) June_2023_update and can be wired mono

and can be wired mono or stereo

You can wear these glasses all day without any pressure

No noise when falling

single-core Twist core

UL and cUL listed products

Official Al Cass Fast Valve, Slide & Key Oil | 2 oz Bottle | Odorless, Non-Gumming Lubricant for Brass Instruments | Trusted by Professionals | Made in USA (2) June_2023_update and can be wired monoOfficial Al Cass Fast Valve, Slide & Key Oil 2 oz Bottle Odorless, Non Gumming Lubricant for Brass Instruments Trusted by Professionals Made in USA (2) FAST, SMOOTH ACTION FOR VALVES Trusted by generations of brass players, Al Cass Fast ensures lightning fast valve response with no sticking or sluggishness perfect for trumpets, cornets, and more. Product Features FAST, SMOOTH ACTION FOR VALVES Trusted by generations of brass players, Al Cass Fast