Drives full round head nails from 1-7/8" -- 2-1/2" in length and from .092 -- .099 nail shank diameter. * Switchable trigger -- Allows the operator to select the fastening mode (Dual action or restrictive) * Dual collation -- Allows the choice between wire weld and SENCO plastic sheet collation. (Plastic sheet collation is limited to direct industrial customers at this time.)