This Optiparts Wind Indicator Pro from Windesign Sailing has a stronger vane-arm, which is accurately balanced and incredibly sensitive. The vane arm of both low-friction indicators is now attached to the needle with a new positive locking system, which prevents losing the vane arm.FeaturesSuitable for Optimist sailing dinghies onlyThis wind indicator is fastened to the top of the Oppie Mast using item: Optiparts Mast Top Pins (sold separately) and a small piece of stringSpecificationColour: Red