Workshop pros and machinery folks, these HARFINGTON clamping levers are seriously well-made! You get 8 pieces in the set, each with M10 female thread (1.5mm pitch) that fits standard applications. The 80mm lever length gives you good leverage, and the 5mm hex socket makes installation straightforward. Made from lightweight aluminum alloy with a black spray coating that resists corrosion and looks professional. The quick-release mechanism is genius - just lift the handle to disengage the gear teeth for free rotation, then push down to lock securely. They rotate 360 degrees smoothly, which is perfect for working in tight spaces where full lever movement isn't possible. The locking mechanism prevents accidental loosening, so your clamps stay secure during operation. Perfect for milling machines, drilling equipment, lathes, woodworking tools, and any application where you need reliable clamping force. The adjustable nature means you can dial in exactly the right pressure without over-tightening and damaging threads. Much better than cheap plastic handles that break under pressure. If you're tired of struggling with inadequate clamping on your equipment, these professional-grade levers deliver the reliability and precision you need for serious work.