https://amzn.to/445ply2 More Air Chucks: 711L and Artisan Factory. Both more reliably airtight than the LockNFlate and less expensive, shorter, and smart looking!
Artisan Factory: https://amzn.to/4b4ctum
711L: https://amzn.to/445ply2
LockNFlate: https://amzn.to/49JIUNG