7pcs 1/4″ Hex Head Allen Wrench Drill Bits Metric 5mm 3.94″ Long Hex Key Drill B
TLEEP Allen Wrench Drill Bit Set Includes 7Pcs 5MM Allen Drill Bits: Bit set shank: 6.35mm/ 1/4″, Length: 100mm(3.94″). Heat treated, durability, has high hardness, not easy to wear. THIS OPERATION GREATLY PROLONGS THE SERVICE LIFE OF THE HEX DRILL BITS.