This professional-grade pneumatic tool set comprises 4 core devices: a 1/2 in. square drive impact wrench, an air-powered rock drill, a 1/2 in. square drive ratchet wrench, and a 1/4 in. chuck-type pneumatic grinder. Featuring sealed bearings for enduring durability, it is specifically engineered for efficient completion of automotive maintenance, metalworking, and similar tasks. The kit includes a 71-piece multi-purpose accessory set (comprising quick-connect adapters, rock drill bits, grinding stones, impact sockets, etc.) to meet comprehensive operational requirements. Tools feature heat-treated alloy cylinders and heavy-duty aluminium alloy housings, complemented by rubber impact-resistant sleeves. This design s the reinforced steel construction philosophy of the 35 x 20 in. tool trolley, ensuring long-term stable operation. The accompanying heavy-duty injection-moulded toolbox employs a modular tiered design (similar to tool trolley drawer compartments). Shock-absorbing linings and customised slots enable categorised tool storage, while the ergonomic top handle facilitates vehicle transport and on-site operations, making every maintenance task effortless and efficient.