The handle fits 1A in the Canon 600D. No wobble, no manufacturing defects. Both drawers (Battery & AA) snap cleanly. Is also clean on my ball head. Thread with no defects. Also works without complaint with the purchased via Amazon Power Adapter Power Supply Adapter for Canon EOS 600D, EOS 550D replaced ACK-E8. All gimmicks like retractable stock flap of the camera under control, suspension cable opening for the power supply adapter, etc. available. It's also nice that the two supplied rechargeable batteries have not 1120mAh as indicated, but 1400mAh! The batteries alone cost about 15 euros apiece. Unrestricted buy recommendation!