Hamskea GEN2PRO Third Axis Sight Level Black. Specifications for Hamskea GEN2PRO Third Axis Sight Level: Manufacturer: Hamskea Color: Black Features of Hamskea GEN2PRO Third Axis Sight Level: Built-in string groove and circular turret level Works for fixed pins or slider sights Capable of opening up to accept sight or riser widths up to 1.3" String groove for leveling bow in a bow vice Multiple mounting options: riser sight dovetail sight rail string Package Contents: Hamskea GEN2PRO Third Axis Sight Level Hamskea 101002: GEN2PRO Third Axis Sight Level Black