Stanley J197 Proto Safety Wire Twister Reversible Pliers - 11-inch Reversible safety wire pliers provide right and left twist capability often eliminating the need for a second plier. Meet SAE Aerospace Standard AS 567 Twister Requirements. Provides all of the features of standard Proto Safety Wire Pliers. J196 designed for wire sizes .020-inch - .041-inch. J197 designed for wire sizes .020-inch - .060-inch. J198 designed for wire sizes .020-inch - 0.60-inch.