Allen Wrench Drill Bit Set-20PCS 4" Metric & SAE, S2 Steel Impact Bits — Open-Box, 10% Off

20PC HEX BIT SET & ALLEN WRENCHES SETS: Hex bit set delivers 10 SAE（ 5/64”,3/32”, 7/64”, 1/8”, 9/64”, 5/32”, 3/16”, 7/32”, 1/4”, 5/16”) and 10 Metric (1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, 6mm, 7mm, 8mm) CNC S2 steel bits. 4" magnetic hex shank accesses deep engine bolts with anti-strip torsion control. Ideal for allen wrenches sets in automotive and machinery applications

LONG HEX BIT SET - EXCEPTIONAL IMPACT TORQUE RESISTANCE: Long hex bit set absorbs heavy loads via heat-treated S2 alloy and manganese coating. Engineered for allen wrenches sets for impact driver with exceptional durability. Non-slip hex grip prevents breakage in construction and auto frames

METRIC HEX BIT SET WITH DEEP EXTENSION: Metric hex bit set pairs 4" shaft + 2.3" extension (6.3" total) for tight plumbing and electronics. Magnetic tips secure screws effortlessly. Combines with allen bit set for universal 1/4" impact compatibility

PRACTICAL HEX DRILL BIT SET ORGANIZER: Anti-slip case with labeled slots protects hex drill bit set during transport. Quick size identification for mechanics & DIYers. Enhanced rust-proof coating supports long-term storage in humid environment

DURABILITY OPTIMIZED BLUE HEX BITS: CNC-machined blue hex key bits resist stripping under heavy use. S2 alloy steel construction delivers exceptional durability. Engineered impact allen bits provide reliable performance for demanding mechanics

This comprehensive 20-piece hex bit set combines both SAE and Metric measurements to handle diverse fastening applications. The SAE collection includes sizes from 5/64" to 5/16", while the Metric range spans 1.5mm to 8mm. Each bit features a 4-inch magnetic hex shank constructed from heat-treated CNC S2 steel with manganese coating, providing exceptional impact torque resistance and durability. The magnetic tips securely hold screws in place, making installation and removal more efficient. A 2.3-inch extension is included, extending the total reach to 6.3 inches for accessing deep or recessed fasteners in tight spaces such as engine compartments, plumbing fixtures, and electronic assemblies. The non-slip hex grip design prevents bit breakage during high-torque applications. All bits are compatible with standard 1/4-inch impact drivers and feature anti-strip torsion control for reliable performance. The set includes an organized storage case with labeled slots for quick size identification and protection during transport. The rust-proof coating on the bits ensures longevity even in humid storage conditions, making this set suitable for automotive repair, construction, machinery maintenance, and general DIY projects.