It was a wonderful trombone for 15 years, but always had a too-tight slide that wouldn't work completly smooth

Started a trombone with a noisy slide, and a little sluggish

Works excellent, my son said his trombone is so much better now.

hi all,many thanks for sending slide o mix to my faraway country .this product is the best trombone slide lubrication system i have ever met up to now.thank againjudex from mauritius island

Trusty Slide-O-Mix

Trusty Slide-O-Mix