The Universal Reversible & RatchetingMaster Socket Drive is a one-piece total tool system. The Socket self-adjusting universal socket system with automatic standard and metric application with no guessing. Self adjusts from 5/32- into 9/16 -in US SIZES (4mm to 15mm.) The Universal Master Socket Drive works in all shapes and sizes except a perfectly round head. For those, all you have to do is file an edge for gripping! Also includes 14 different standard AND precision Screwdriver Bits inside the handle:
IT'S THE ALL-IN-ONE MULTITOOL! (Patent pending)
SL3/16", SL1/4", PH1, PH2, Robertson#2,T15
SL2.5, SL3.0, SL4.0, T5, T6, T8, H1.5, H2.0.