Bohning Complete Tower Jig Kit Black. This fletching jig by Bohning allows you to fletch all three vanes at once and includes 7 sets of arms capable of fletching up to a 4" vane a 1 degree offset up to a 4" 3 degree right helical up to a 2.25 vane a 1 degree offset (for Impulse vanes) a 2 degree right wing feather a 2 degree left wing feather a Mylar vane arm and a complete set of clamping rings. The Bohning Complete Tower Jig Kit comes with center posts for attaching to standard carbon F nock A nock pin nock HE nock swedged shafts and crossbow bolts. Specifications for Bohning Complete Tower Jig Kit: Manufacturer: Bohning Color: Black Package Contents: Bohning Complete Tower Jig Kit Bohning 601027: Complete Tower Jig Kit Black