Straight Tube - 18"

Product Specifications

Glass Thickness: 9mm thick

• This is heavy-duty glass that won't break easily
• The extra-thick base provides rock-solid stability
• Premium construction built for daily use and rigorous sessions
• Stands up to daily wear and tear without worry
• Built to last through countless sessions

Height: 18 inches / 45.75 cm

• This is a large sized bong
• Perfect for serious smokers who want the smoothest possible experience
• Great for both solo chilling and hosting group sessions
• Commanding presence that makes a statement in your collection

Joint Size: 19mm Female

• This is where you insert the bowl/downstem
• 19mm is a standard size, so replacement parts and accessories are easy to find
• Features a reinforced downstem joint for extra durability at the connection point

Tube Diameter: 50mm

• This is the width of the main cylinder (about 2 inches)
• Standard comfortable size - not too narrow, not too wide
• Affects how much smoke the chamber can hold - and at 18", that's substantial

Downstem Length: 5.75 inches / 14.5 cm

• The downstem is the tube that goes from the joint down into the water
• Important if you ever need to buy a replacement - keep this measurement handy!
• Removable for easy cleaning

Design: Straight Tube Style

• 18-inch height allows smoke to travel maximum distance for cooling
• Classic straight tube shape that never goes out of style

Base Design: Flat Round Base

• extra-thick flat base provides maximum stability
• Despite straight tube profile, base won't tip over easily
• Heavy bottom provides confidence during use

Finish: Electroplated

• Multiple layers of electroplating permanently fuse color to the glass
• Creates a bold, modern style that stands out
• True electroplating (not spray paint) - smooth, even, glossy layer

Cleaning & Maintenance:

• Use standard bong cleaning solutions or isopropyl alcohol
• Straight tube design makes cleaning easier than complex percolators
• Typical cleaning products won't harm the electroplated finish

Best For:

• Users who prefer straight tube design over beakers
• Daily users who need durability and style
• Anyone who wants the smoothest possible smoking experience
• Both solo sessions and group sessions

Why These Specs Matter: Whether you're a collector seeking tall, impressive pieces or a dedicated user who wants the absolute smoothest hits possible, this electroplated straight tube delivers on all fronts. The commanding 18-inch height makes it a focal point in any collection. Every time you use it, you'll appreciate the perfect combination of maximum cooling, pure flavor, and stunning aesthetics. This isn't just equipment - it's a statement piece that performs at the highest level!

What's in the Box

Your 18" Electroplated Straight Tube Bong: 

The complete beaker bong featuring a stunning electroplated finish with Castle Glassworks logo, ready to make every session stand out right out of the box.

Glass Bowl & Downstem: 

Essential color matched accessories included with your bong.

Bong Multi-tool: 

A handy 3-in-1 accessory for maintenance:

• Bowl poker - clears ash and debris from the bowl
• Kief scoop - collects the fine particles from your grinder
• Tamper - packs material evenly for better airflow

Castle Sticker: 

Official Castle Glassworks branding sticker to personalize your gear.

Bottom Line: 

Everything you need to turn heads and enjoy smooth sessions immediately. Simply fill with water, and experience the perfect blend of show-stopping style and reliable, smooth performance for daily use or special occasions.