Gridfinity Wrench Holders (Stackable)

From-scratch design inspired by another design that was too tight fitting for my wrenches (https://www.printables.com/model/284688-wrench-gridfinity-for-stanley-box-wrenches).The 3x2 x 1/2h version can hold 7 wrenches up to ~116mm long.The 4x2 1x 1h version can hold 6 wrenches up ~158mm long.Supports stacking!