The ShiftLock Carbon handles provide an instant reaction to your input, with the bonus of being able to slide and lock into infinite positions. Carbon ShiftLock handles are purchased separately from the wing, which makes it easy to find your perfect setup. There are four carbon handle lengths, from the single 1100 boom to the 500, 400, and 250 mm handles. Follow the size chart to determine the best handle combination for your wing size. If you're a more experienced rider and you know what you want, then you've got the option to either downsize or go for a boom. The 1100 boom is our lightest handle option. Although it's the longest handle, it only has two connection points, so the overall weight is lower than two separate bars with 4 mounts. This suits a rider wanting a lighter rig for lighter winds and larger wings. The boom is also the most cost-effective option and would suit any rider’s ability; it’s more forgiving because it allows you to slide your hand up and down during tacks. The smaller 250 handles target the more advanced rider looking for targeted positioning.The ShiftLock 1100M Boom does not fit on the Nova Pro 2.9M