Flex Fletch FFP ShieldCut FLEX2 Vane 1.87 in 39 pk. Black. Flex Fletch vanes retain their form even after shots that pass through targets. Provides flexibility that dampens arrow oscillation and increases accuracy. Features FLEX2 Polyurethan Technology. Shield cut vanes available in sizes 1.87 (3.08 gr.) 2.25 (3.75 gr.) and 3.6 (7.7 gr.). Package Contents: Flex Fletch FFP ShieldCut FLEX2 Vane Flex Fletch FFP-187-BLK-39: FFP ShieldCut FLEX2 Vane 1.87 in 39 pk. Black