Hi-Spec 1/2" Drive Impact Hex Bits (H4–H17) in both 55mm and 100mm lengths—built tough for high-torque jobs where precision matters:
🔧 Product Description
Hi-Spec 1/2" Drive Impact Hex Bit Set – H4 to H17, 55mm & 100mm Lengths When stubborn bolts and high-torque demands meet tight tolerances, the Hi-Spec Impact Hex Bits delivers. Designed for use with 1/2" drive impact wrenches and ratchets, these heavy-duty bits are forged from hardened chrome molybdenum steel to withstand repeated hammering without rounding or twisting. With sizes ranging from H4 to H17 and two practical lengths—55mm for compact access and 100mm for deeper reach—this set is ideal for automotive, machinery, and industrial maintenance. Whether you're working on brake calipers, engine blocks, or heavy equipment, these bits bring the muscle and precision you need.
📋 Specifications
| Feature |
Details |
| Drive Size |
1/2" square drive |
| Bit Sizes |
Metric Hex: H4, H5, H6, H7, H8, H9, H10, H11, H12, H13, H14, H15, H16, H17 |
| Lengths Available |
55mm and 100mm |
| Material |
Chrome Molybdenum Steel (Cr-Mo) – impact-rated and heat-treated |
| Finish |
Black phosphate or oxide coating for corrosion resistance |
| Retention |
Chamfered ends with detent groove for secure socket fit |
| Applications |
Automotive, industrial, mechanical, and heavy-duty DIY |
| Compatibility |
Suitable for pneumatic and electric impact wrenches |
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