The lids are compatible with nearly all our jars, including: – FourSide Jar – J2 Jar – WildSide Jar – WildSide Jar – Rebel Jar – Frothing Jar Not compatible with: – Twister Jar – Mini WildSide Jar The Blendtec cone lid is manufactured out of just a single piece with the air vent built in to the lid, so no plastic insert is needed anymore. As such you can add liquids while blending without needing to remove the lid.
