Cover heavier cuts without sacrificing accuracy. 18 TPI hacksaw blades give you a robust tooth pitch that clears swarf quickly in thicker bar, tube and profiles. The 12‑inch format fits most frames and tensions cleanly to reduce wander, while the tooth geometry maintains a steady feed rate so you can keep pressure even along the stroke. On aluminium, copper and mild steel the 18 TPI hacksaw blades feel planted; they chew through material with less stalling and leave a consistent edge that’s ready for filing. Hard plastics benefit too—the set limits heat build‑up and helps prevent melting along the cut. For fabrication, fit‑off and general maintenance, 18 TPI hacksaw blades are the dependable option when you need speed with a finish that looks professional.