The Jim Dunlop 210 Medium Tempered Glass Slide is made from Boron Silicate and heat treated.
Unlike other slide manufacturers, Dunlop knows about the individual requirements, which present themselves with different playing techniques. Finger size as well as string contact and the sound play a big role. Glass slides produce warm and powerful sound with mid pronounced overtones.
The main features of the 210 Medium Tempered Glass Slide include: