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The Sealey AK21901 is a 42-piece impact bit set for professional daily use. It covers three common bit types — TRX-Star (Torx compatible), hex, and spline — in a wide range of sizes. Each bit comes in both a 36 mm and a 75 mm length, so you can reach both shallow and recessed fixings.
The set works with 3/8" and 1/2" square drive tools using the two included adaptors. That makes it ideal for impact wrenches and ratchets.
The bits are made from high-quality impact-grade S2 steel with a satin finish. Torsion bits absorb the shock of an impact tool and transfer maximum torque to the fixing. Heat-treated, CNC-machined tips reduce stress and prevent cam-out under load.
Each bit is hardened to 58–62 HRC and tempered for extra strength. This helps the bits stand up to heavy, repeated use without rounding off. The set is backed by a lifetime guarantee.
The bits are colour-coded by type for quick identification. They are supplied in a storage case with an inclined tray, so you can see and grab the right bit at a glance.
All bits come in both 36 mm and 75 mm lengths:
| Brand | Sealey (Premier) |
| Model | AK21901 |
| Set quantity | 42 pieces |
| Bit material | Impact-grade S2 steel, satin finish |
| Hardness | 58–62 HRC |
| Bit lengths | 36 mm and 75 mm |
| Bit types | TRX-Star (Torx compatible), hex, spline |
| Drive | 3/8" and 1/2" square (via adaptors) |
| Storage | Case with inclined tray |
| Guarantee | Lifetime* |
| UPC | 5054511977868 |
Tool Source operates as an independent retailer of Sealey products in Ireland. All Sealey trademarks, model names, and logos belong to Jack Sealey Ltd. Torx® is a registered trademark of Acument Intellectual Properties, LLC, referenced only to indicate bit compatibility. Tool Source uses all trademarks solely to identify products accurately.
