glass ground joints: -- purple -- 3.3 high borosilicate glass -- health-safe

glass ground joints:

Main features of Glass ground joint, pipes, bongs, slider and other glass products

Used material – 3.3borosilicate glass(Pyrex) is extremely hard and absolutely health-safe. Beautiful color changing effect - silver or gold fumed glass Carb holes or glass on glass easy removable sliders makes water bongs really the best devices for smoking. Only fine double glass sliders - slider surfaces are more heat resistant and remains cool.

amber colored glass ground joints