SR-12 Sprocket Remover/Chain Whip

See the updated SR-12.2: • SR-12.2 Sprocket Remov...
More info on the SR-12 (Discontinued): www.parktool.c...
This combination chain whip and freewheel / lockring remover wrench is heat treated to prevent bending and flexing, with a molded handle for comfort.
• Works on 5- to 12-speed cassettes and freewheels
• 1" (25.4mm) box-end wrench fits Park Tool Freewheel/Cassette Lockring Tools
• Features hardened pins to keep the chain in place
Learn how to use this tool by watching our Cassette & Freewheel Repair Help videos ▶︎ • Determining Cassette/F...
Related Products:
• SR-18.2 Sprocket Remover / Chain Whip ▶︎ www.parktool.c...
• HCW-16.2 Chain Whip / Pedal Wrench ▶︎ www.parktool.c...
➤ Fix It:
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• Visit our TH-cam Channel: / parktool
• Visit the Repair Help section of Parktool.com: www.parktool.co...
• Check out The Big Blue Book of Bicycle Repair: www.parktool.co...
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Park Tool has been manufacturing bicycle specific tools since 1963. Based out of St. Paul Minnesota, we are the world's largest bicycle tool manufacturer. A long-term dedication to quality, innovation, and customer service has made Park Tool the first choice of professional and home bicycle mechanics around the world.
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[@user-cx2bk6pm2f]

I got the SR2. 3 instead. I like the idea of being able to replace the chain segments. Will probably never have to though!

[@newttella1043]

But you still need a second hex wrench to undo the lock ring while using the chain whip. Maybe useful for people who keep losing their hex wrench between undoing lock ring and reassembly. Seems like a feature for a feature's sake.

[@Methodical2]

You can also use a crescent wrench or socket on the removal tool (FR 5.2 for example, see video below) to undo the lock ring, so no need to buy a hex wrench at all if you have either of those tools. I wouldn't buy a hex wrench and instead use either a crescent wrench or a socket (depending on how tight the lock ring is), since I already have those tools. So, the hex wrench is not a feature for feature sake for me.
th-cam.com/video/M1MGmR4KnVI/w-d-xo.html

[@danielebergonzi8461]

The Hex wrench is useful when reinstalling the cassette lockring

[@toddmiller5046]

But you should be using a torque wrench

[@oplkfdhgk]

Oh so that's how you use it. I was using it on the largest cog and it really hurt. 😀

[@danielebergonzi8461]

I find the hex wrench is useful when re nstalling the cassette lockring