Quick clamping nut: Quick clamping nut with M14 thread for fastening and quick loosening of diamond discs, cup-shaped grinding wheels. Abrasive disc and other accessories. Anti-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 avoid being stuck by foreign objects. Material: Made of high strength alloy, working without deformation, can withstand 40N torque and 12000 rpm. 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. Attention: Please check the nut for defects and damage before using it to avoid causing safety accidents. Diameter 49mm, height 13mm, weight 114g. Sophisticated design Ensure the quick release nut does not fall off during use Excellent durable quality The all-metal M14 quick release nuts for angle grinders are durable and long lasting. Simple and easy to use grinder clamping nut Excellent clamping nut for the angle grinder, so that the cutting discs can be changed quickly and easily without having to constantly search for the right spanner and wrench. Caution: 1. The grinding wheel must be aligned with the center of the spindle. 2. Do not remove or install nuts with a 2-pin wrench to avoid damaging the firmware. 3. If it is not possible to remove it during use, you can align the hole with a conventional 2-pin wrench to remove it.