Quick clamping nut: quick clamping nut with M14 thread for quick fastening and loosening of diamond blades, cup-shaped grinding wheels. Sanding disc and other accessories. Non-slip design: The bottom has a fine frosted texture so that the nut blocks the grinding disc without slipping. Please wipe the disc, spindle and quick release nut before using to prevent them from being stuck by foreign objects. Material: Made of alloy high strength, running without deformation, can withstand 40N torque and 12000rpm. High speed, longer life. Compatibility: Compatible with all M14 angle grinders on the market; suitable for diamond cutting discs, abrasive discs, cup wheels, diamond discs and most other types of grinding discs. There is a color difference in the angle of the picture, the actual object shall prevail Attention: Please check the nut for defects and damage before use, to avoid causing safety accidents. < /p> Delivery quantity: 1 pieces