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
Theese are long battery posts to use with 5200 mAh batteries. These are the same post that are used in the standard size Helix and Helix Mg.
These adapt the Letus Helix Jr. to use the larger JuiceBox 5200 batteries, a godsend when using the Helix Jr. with 'larger' setups like the Sony FS5. Easy screw-in replacement for the standard battery posts, and holds the batteries securely. My only recommendation for improvement would be to make the cage-side thumbscrew a captive screw... I've already nearly lost it three times in the field.