prepared for the surprising with the TEKTON 1/4 in. -LRB- F -RRB- to 3/8 in. -LRB- M -RRB- Adapter. This problem solver creates a solution for lost or broken sockets, the gaps in incomplete size ranges, and extends the capability of your existing socket system. Made from charge process vanadium steel, it is precisely treated for master strength and invulnerable by a perdurable, corrosion-resistant mirror process finish.