glazen bottleneck, 18x25x51 mm.

glass slide, 17 x 25 x 51 mm

A warmer, thicker tone that accentuates the middle harmonics of your sound.
Processed from high quality Boron Silicate.
Heat treated and annealed to produce

This glass slide provides a warm, thick tone that accentuates the middle harmonics of your sound, featuring heavy wall thickness and a small diameter. Processed from high quality Pyrex (boron silicate), heat treated and annealed to produce a flawless tube.

Dimensions
Inside diameter: 17 mm
Outside diameter: 25 mm
Length: 51 mm
Wall Thickness: 4 mm
Fits ring size 5.5 – 7