Screw-in cone pieces are the most secure type of cone piece you can fit to a bong — they thread directly into the stem rather than sitting in with a press fit, which means no wobbling, no accidental drops and a better seal every session. All delivered in discreet plain packaging anywhere in Australia.

Shop Screw Cones by Fitting & Material

Six screw-in cone pieces and stem kits in this range:

• Bonza hex head screw-in alloy cones — alloy construction in bonza fitting. The hex head design makes them easy to grip and tighten by hand. Available in multiple sizes including extra-large.
  
  
• Bonza hex head screw-in brass cones — same hex head bonza design in brass. Brass burns slightly cleaner than standard alloy and is the more traditional material for screw-in cones in Australia.
  
  
• Brass standard screw-in cones — standard fitting brass screw-in cones in small and large sizes. A straightforward replacement for any standard grommet bong that uses a threaded cone fitting.
  
  
• Teak Monster Screw Cone — a larger capacity screw-in cone for bigger sessions. Fits standard grommet bongs with a threaded stem.
  
  
• Standard Anodised Brass Screw-In Cone & Collar Stem Kit — a complete stem kit from Waterfall including an 8cm anodised stem, brass screw-in cone and collar.
  
  
• Bonza Anodised Brass Screw-In Cone & Collar Stem Kit — same complete kit format in bonza fitting. Anodised aluminium stem with brass screw-in cone and collar included. Available in multiple length options.

Screw-In vs Press-Fit Cone Pieces — What's the Difference?

Press-fit cones (also called slip-in or pop-in cones) sit inside the stem and rely on friction to stay in place — they're the most common type and easy to remove for cleaning. Screw-in cones thread into the stem and stay locked in position — better for smokers who find their cone piece falling out during use or want a more secure fit.

If you're not sure which type fits your bong, check your existing stem — if it has internal threading, you need a screw-in cone. Browse our full cone pieces range for all cone types including brass, glass and stainless steel options.