"Do I have a cassette or a freewheel?"
This video gives the answer. It also helps determine which tool is needed for removal and installation.

Video contents:
00:00 Preliminary Info
00:43 Cassette vs. Freewheel
02:09 Cassette Info
03:26 Tool Selection - Cassette
05:11 Freewheel Info
05:54 Tool Selection - Freewheel

Questions or comments? Leave them below!

➤ Removal & Installation Videos:
Cassette Removal & Installation ▶︎    • Cassette Removal & Installation  
Freewheel Removal & Installation ▶︎    • Freewheel Removal & Installation  

➤ Tools & materials used:
Cassette Lockring Removal Tools:
• FR-5.2 Cassette Lockring Tool -
https://www.parktool.com/product/cass...
• BBT-5/FR-11 Bottom Bracket Cassette Lockring Tool (for Campagnolo®) -
https://www.parktool.com/product/free...
• FR-5.2G Cassette Lockring Tool With 5mm Guide Pin -
https://www.parktool.com/product/cass...
• FR-5.2GT Cassette Lockring Tool With 12mm Guide Pin -
https://www.parktool.com/product/cass...
• FR-5.2H Cassette Lockring Tool With Handle -
https://www.parktool.com/product/lock...

Freewheel Removal Tools:
• FR-4 Freewheel Remover -
https://www.parktool.com/product/free...
• FR-7 Freewheel Remover -
https://www.parktool.com/product/free...
• FR-1.3 Freewheel Remover -
https://www.parktool.com/product/free...
• FR-2 Freewheel Remover -
https://www.parktool.com/product/free...
• FR-3 Freewheel Remover - https://www.parktool.com/product/free...
• FR-6 Freewheel Remover -
https://www.parktool.com/product/free...
• FR-8 Freewheel Remover -
https://www.parktool.com/product/free...

For a text-based walk-through of this process:
https://www.parktool.com/blog/repair-...

➤ Subscribe: https://www.youtube.com/user/parktool...
➤ Like:   / parktool  
➤ Follow:   / parktoolblue  

➤ Fix It:
Did you know that Park Tool is the #1 resource for bicycle repair education?
• Visit our YouTube Channel:    / parktool  
• Visit the Repair Help section of Parktool.com: http://www.parktool.com/blog/repair-h...
• Check out The Big Blue Book of Bicycle Repair: http://www.parktool.com/product/big-b...

➤ About Park Tool:
Since our founding in 1963, Park Tool has been the leading name in bicycle tools. Our YouTube channel is an extension of our mission to be the ultimate resource for mechanics and riders of all skill levels. Here you will find comprehensive repair help tutorials for a wide range of components and processes, as well as troubleshooting guides, tips and tricks, and information on the latest Park Tool products.