High-durability scientific bubbler handcrafted by U.S. Tubes in Berkeley, CA. • Features an integrated multi-slit showerhead percolator for smooth, low-drag diffusion. • Finished with the signature light blue "Bear Shield" logo and a matching branded slide. • Pristine condition: only seen distilled water for a single function test; functionally new. Specifications • Maker: U.S. Tubes • Joint Size: 14mm Female (Fixed) • Percolator Type: Multi-slit Showerhead • Glass Thickness: 5mm Borosilicate • Logo: Light Blue Bear Shield • Accessories: Includes matching branded 14mm clear slide Condition Notes Status: Mint / Like New. This piece has undergone one water-only function test and has been deep-cleaned and dried. There are no chips, scratches, hard water stains, or "bloom" present. The joint and base are in shop-perfect condition. #USTubes #GlassPass #ScientificGlass #ShowerheadPerc #GlassForSale #HeadyGlass #CaliforniaGlass #Borosilicate #Bubbler