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【20 Metric&SAE hex Bits】This 4” long quick release hex-shank bit set include 10pcs metric hex bits set(1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, 6mm, 7mm, 8mm), and 10pcs SAE hex bits set(5/64”,3/32”, 7/64”, 1/8”, 9/64”, 5/32”, 3/16”, 7/32”, 1/4”, 5/16”. 1/4” )

【Enlongated for Wider Applications】This allen wrench drill bit are extended to 4 inch length, a 2.3 inch extension socket also included for wider application. Extended length provide additional clearance for reaching into tight spaces, helping you tackle with more complex working angles and depths and improve efficiency

【Torsion Zone Design】This impact hex head allen wrench drill bits is uniquely designed with torsion zone to fully absorb torque peaks to avoid breakage. 1/4" Hex-Shank is compatiable with most impact driver and heavy screw driving in the market

【CNC/S2 Grade Material】This allen bit set is made of S2 alloy steel body, CNC machined tips and hardened core, enhancing bit strength and minimize the risk of breakage. The manganese phosphate coating effectively prevents rusting. The strengthened impact bit allows for easy pickup of screws

【Unlimited help from Nicofie】This set is Ideal for home repairs, automotives, industrial, and various screw-driving projects. Nicofie is committed to delivering premium hex bit set to ensure customer satisfaction. Should you have any inquiries regarding our products, please reach out to us, and we will respond promptly within 24 hours to offer you a tailored solution