The square opening is 3/8” wide .
3-PC. Double-Jointed Gripping Pliers 13" X-Small (1/4") - Large (3/4") Mac Tools
Set of 4 MAC Tools 11/16, 5/8, 1/2, 9/16, 7/16 Wrenches USA Flare Nut Combo SAE
Mac Tools SXMTS8B 3/8" Drive Metric Triple Square 4, 5, 6, 8, 10, 12, 14, 16mm
Vintage MAC Tools 3/8" Square Drive Pneumatic Air Ratchet AR154 work great
MAC TOOLS 6 PIECE 3/8" ASSORTED TORX, PHILLIPS, TRIPLE SQUARE BIT CHROME SOCKETS
???????? MAC Tools #1 #3 SQUARE Driver Screwdriver Set Lot Red 7.5" Long USA R1 R3
