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    RezBlock XL - 420 Science - The most trusted online smoke shop.
    RezBlock XL - 420 Science - The most trusted online smoke shop.
    RezBlock XL - 420 Science - The most trusted online smoke shop.
    RezBlock XL - 420 Science - The most trusted online smoke shop.
    RezBlock XL - 420 Science - The most trusted online smoke shop.
    RezBlock XL - 420 Science - The most trusted online smoke shop.
    Customer Reviews
    4.9 Based on 57 Reviews
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    CC
    04/09/2021
    Ciara C.
    United States
    Game Changer!

    This product seriously changes the game for how easy it is to clean out your bong! I literally only have to rinse out with hot water and shake when I am ready to clean them. That's it. No alcohol or coarse salt. I will definitely be using this for life. Thank you! :)

    BV
    02/17/2021
    Bryan V.
    United States United States
    Rez block works

    When I first bought rez block years ago I don't think I used it right. Cause with my new water piece it's so easy to tell when I do and do not use rez block. Rez block just does what it's name says it does. It blocks resin from building up. For me it's most noticeable on the downstem. You don't have the black build up on the outside or inside of the stem where it's submerged in water. Makes cleaning that much easier, it's a bit pricey in my opinion, but if you do something well never do it for free.

    420 Science RezBlock XL Review
    DH
    12/28/2020
    Daniel H.
    United States United States
    AWESOME STUFF

    This is the only stuff I put in my bong, you have to it every three to for days. It does an amazing job on keeping all your glass clean.

    DC
    12/21/2020
    Darrell C.
    United States United States
    RezBlock 30ml

    I love how it keeps my glass pieces clean and easy to clean.