The q max 18.6Mm sheet metal hole punch is designed for creating larger apertures in sheet metal up to 16 gauge. This specific metric size is ideal for specialized electrical fittings, larger cable glands, and applications where an 18.6Mm hole is required. Engineered with heat-treated cutting edges and a black anti-corrosive surface finish, this punch delivers clean, burr-free holes consistently. The special design distributes cutting load evenly, ensuring smooth operation even on tougher materials within the 16 gauge range. This larger size features the modified configuration with the thread in the punch itself, eliminating the die nut component and simplifying the assembly process. Operation requires an 8mm hexagonal wrench mb type , reflecting the increased torque requirements for this larger cutting diameter. The mechanism pulls the punch cleanly through the metal for professional results. Features and benefits: 18.6Mm diameter ideal for larger electrical and cable entry applications requires 8mm hexagonal wrench mb type, sold separately simplified larger-size configuration for easier operation heat-treated cutting edges ensure long-lasting performance burr-free cutting eliminates finishing work specifications: punch type: metric diameter mm : 18.6 Key type: mb. 8Mm hex key pilot drill mm : 11