Here is a concise summary of the provided transcript:
**Title:** The Unliftable Dumbbell Challenge
**Summary:**
* The host purchases a set of "unliftable dumbbells" (20kg to 78kg) with unusually thick handles, making them hard to grip.
* Only one person in 100 years allegedly lifted the heaviest one, its inventor Thomas Inch.
* The host and their strongest friends attempt to lift the dumbbells but struggle due to the slippery, oversized handles.
* Research reveals the secret to lifting the "Inch Dumbbell" lies in its thick handle, requiring lifters to use only their fingertips.
* The host applies this technique, along with chalk, and comes close to lifting the 53kg dumbbell.
* In a surprising twist, the host's 64-year-old dad, with larger hands, is hinted to potentially outlift the host, setting up a challenge for the next episode.
Here are the key facts extracted from the text, numbered and in short sentences:
1. **Unliftable Dumbbell**: The subject of the text is an "unliftable dumbbell" that supposedly only one person in 100 years can lift.
2. **Previous Lifter**: The inventor, Thomas Inch, is the only recorded person to have lifted it, sparking controversy over potential tricks.
3. **Purchase Details**: The author bought six "Circus Dumbbells" ranging from 20 kg to the "unliftable" 78 kg, for approximately $1,050.
4. **Shipping Cost**: Shipping for the dumbbells was $603.
5. **Dumbbell Design**: All dumbbells have the same handle size, which is unusually large, making grip a significant challenge.
6. **Weight Increment**: Each dumbbell increases by approximately 10 kg.
7. **First Successful Lifter After Thomas Inch**: In 2002, someone with exceptionally large hands successfully lifted the dumbbell.
8. **Secret to Lifting**: The key challenge and "secret" to lifting the dumbbell lies in its thick handle, which most people can only grip with their fingertips.
9. **Techniques Tried**: Techniques like removing oil from the handle, using chalk, and gripping with fingertips were attempted to lift the dumbbell.
10. **Age and Strength**: A 64-year-old man with larger hands was able to lift the dumbbell, showcasing the importance of hand size.
11. **Original Weight of the "Unliftable" Dumbbell**: The Thomas Inch Dumbbell weighs 172 pounds (approximately 78 kg).