Park Tool Screw Type Chain Tool - CT-3
Go to most any pro-quality bike shop and take a peek behind the counter in the work area. The Park Tool CT-3 Chain Tool is most likely the chain tool they rely on to get the job done. The cast steel body makes it comfortable and secure. Likewise, the vinyl covered T-handle gives you plenty of leverage for sticky pins. This is a pro-quality tool, yet the cost is not so high that you shouldn't have one for your home shop. The drive pins on the tool are replaceable so you can expect this investment to last a lifetime, even with heavy use.