CUTTING CAPACITY: This 8" bolt cutter's max cutting capacity is HRC≤15: 1/8" (3.5mm Maximum), HRC≤30: 1/13" (2mm Maximum), very suitable for cutting steel wire, chains, cables, etc. It is not recommended for cutting locks.MATERIAL: The drop-forged jaw is made of strong and durable high-quality Cr-V, with high hardness, good wear resistance and good cutting performance. The blade is not easy to break or deform and can be used for a long time.USER-FRIENDLY DESIGN: Ergonomic PP+TPR insulated handle and non-slip soft grip provide extra comfort while cutting and provide a better grip for more controllable cutting.EFFICIENT LEVERAGE: The combination of classic lever design and strong blade provides stronger cutting force. Meanwhile, it can save labor and speed when cutting, and improve work efficiency.WIDE APPLICATION: Bolt cutters can handle various cutting tasks and are widely used in industrial job sites or home improvement projects, repair and disassembly work, etc. Product Description Bi-Material(PP+TPR) Handle Grip Soft&Durable Material Labor-Saving High Efficiency Bicycle Basket Electric Wire Fence Bicycle Repair Security Lock Design Save Space Easy to Store Safe to Carry What are the applicable cutting ranges? 8" Mini Bolt Cutter: HRC≤15: 1/8" (3.5mm Maximum), HRC≤30: 1/13" (2mm Maximum) 14" Heavy Duty Bolt Cutter: HRC≤19: 5/16" (8mm Maximum), HRC≤48: 3/16" (5mm Maximum) 18" Heavy Duty Bolt Cutter: HRC≤19: 1/4" (7mm Maximum), HRC≤48: 3/8" (10mm Maximum) What are the maximum opened widths? 8" Mini Bolt Cutter: 1/4" (7mm) 14" Heavy Duty Bolt Cutter: 2/5" (10.5mm) 18" Heavy Duty Bolt Cutter: 3/4" (19mm) How can I know if these bolt cutters will cut what I want? The cutting capacity will vary according to the thickness and hardness(HRC) of wires/ something else (see Answer 1). Besides, bolt cutter with longer handle provides more leverage and requires less force to cut, making it easier to cut things off.