These are Mac Tools RBRT wrenches, so they bite into fasteners.
VTG MAC Tools SAE Nutdriver set 1/4" - 1/2" Mechanic Shop Hand Tools With Holder
MAC Tools Mac-Grip 9/32” SAE Nut Driver - Comfort Grip PNDF932DR-S NEW
Mac Tools Socket Tray Organizer Holder for Hex SAE Socket Set 3/8" Drive 7PC USA
MAC TOOLS 7 PIECE SAE NUT DRIVER SET 1/4 TO 1/2 With Organizer
vintage MAC tools FG50 inch FEELER GAUGE set SAE kit valve lash adjustment FG-50
Mac Tools USA 48-Piece Thread Restoring Set TRCOMBO-48 SAE & Metric & Organizer.
