Tag: bottle caps

The age-old question of why bottle caps have 21 ridges has finally met its answer. Uncover the intriguing reason behind this curious design choice and satisfy your curiosity once and for all. Why 21 ridges and not 18 or 20? There's more to this mysterious number than meets the eye. Get ready to quench your thirst for knowledge as we reveal the fascinating history and symbolism behind those 21 ridges.

Applying a beer bottle cap to duct tape can help you solve household problems, but most people are unaware of this.