⬡ 1/4" Dr. PHILLIPS bit socket 37L #1 (CL503401, CHANGLU TOOLS)
Comply with DIN 8764-1 standard manufacturing requirements
The sleeve is forged with 50BV30 chrome vanadium steel, chrome plated mirror knurled
The bit is made of S2 alloy steel, which is hardened as a whole, with high hardness, large torque and not easy to break