420 Science Promo Codes and Coupons December 2025

Fredericks & Mae Palo Santo Incense

Pure Woodland Aroma Palo Santo is a cleansing aroma. The naturally gently smoking wood has a light outdoorsy smell and is long-lasting but gentle. These incense sticks are good for indoors and out on the back porch as well. Each tub contains five long-lasting palo santo sticks. Specs: Palo Santo incense Contains 5 sticks Made by Fredericks & Mae

RAW Classic 1 1/4in Rolling Papers

Raw as It Gets RAW rolling papers are pure and less processed than traditional papers. For many die-hard hand rollers, RAW is the only way to go. These nearly translucent papers are made with unbleached natural, eco-friendly paper that is a natural light brown color. Each paper is imprinted with a patented CrissCross watermark. This unique watermark keeps your herbs burning smooth and even with no runs. These traditionally sized rolling papers are the cornerstone of hand rolling your favorite smoke. Specs: Leaf dimensions: 3 in x 1 1/4 in Unprocessed, unrefined papers 32 leaves per pack Watermark helps prevent runs and promotes even burning

GRAV Hourglass Pocket Bubbler

Lose Track of Time With Hourglass Pipe The hourglass shape is a classically recognized form that suggests intelligence and sophistication. This glass bubbler has a removable bowl allowing you to adjust the size of your hit or even put a banger on this pipe to convert it into a rig. The long and offset mouthpiece prevents any splashback. The hourglass shape is easy to hold and is stable on the table. Specs: Height: 4in Base width: 2.5in fixed downstem 10mm female flush joint 10mm male bowl included

Low Profile Diffused Downstem

Every Length Downstems These Low-Pro diffused downstems have slotted side walls that project air bubbles to the sides of your water pipe and downward. The right amount of percolation for any length of downstem without adding drag. Downstems are the all-too-important part of your bong that causes the smoke to travel from the bowl to the water. If your downstem breaks then your whole pipe is broken. We know how much of a bummer it can be to have a hard time finding the right replacement so we've made sure that whatever length you are looking for, we've got it. If you're not sure how long your downstem is you can check here. This downstem will fit a bong that has a 19mm opening and accepts 14mm bowls. Specs: Length: 3-6 in For use with 14mm male bowls The outside ground joint is 19mm Clear glass borosilicate downstem Slotted sides provide great percolation Length measured from bottom of ground joint

RezBlock XL

The Resin Preventer There’s something about a water pipe coated with resin that just makes us feel dirty. That’s why we change our water every day. But that’s not all. Not by a long shot. We also use RezBlock. Just a few drops help prevent the resin from building up. It keeps our pieces clean, and our hits fresh and delicious. When you add RezBlock to your water, it prevents the resins from sticking to the glass and instead they float in the water allowing you to pour out that gunk along with the ash and other particulates you don't want. RezBlock is completely organic, which means you'll need to change your water out regularly. With RezBlock and regular water changes, you'll see drastically less buildup in your bong. Want to know more about RezBlock? Specs: Up to 120 uses per bottle Contains fruit extracts, vegetable glycerin, purified water, citric acid Won't affect the taste Just a few drops needed with every water change 30ml of solution Check out RezBlock Mini for on-the-go use

Red Eye Tek 4.25" Mini Rig

Red Eye Tek 7.5" Waterton Recycler Rig

RED EYE TEK INFINITY CHAMBER RECYCLING RIG The Red Eye Tek Infinity Chamber Recycling Rig is a beautiful and functional smoking accessory designed for enthusiasts. Its mesmerizing infinity chamber ensures every hit is cool and filtered, and the dual-tone amber and clear borosilicate glass design is a testament to Red Eye Tek's renowned craftsmanship. Choose from three vibrant colors to showcase your unique style with this heirloom-quality piece. SPECS: Height: 7.5in Base width: 3.5in Dual-tone high-quality borosilicate glass 14mm female joint 14mm male quartz banger included Infinite recycling chamber for cooling and filtration Three distinct colors available Embossed with the iconic Red Eye Tek insignia

ROOR 18.8mm Funnel Bowl w/Handle

AUTHORIZED ROOR RETAILERSerious BusinessROOR makes pipes that are thoughtfully crafted with lifetime use in mind. Of course, if your bowl is missing or broken, that brings the fun to a screeching halt. So here is a replacement. Specs:18.8mm male bowlDense 5mm borosilicateGerman Schott glassMade b...