I have several pipers who struggle with howling drones and wheezing cut offs and striking in. After trying several other products, in desperation I got a set of these and to my delight, they worked straight out of the package (with a little waxed hemp and a strong right arm). I have them in three of my own pipe sets, including my 1956 Lawries, which have been temperamental as a teenager until these went in. I’m very impressed, and highly recommend them if your technique is a little suspect. They do need the desiccant changed annually, but they work very well.
Reviewed by: Billthedoc from Ocean Springs on 9/19/2023