Product Description FLEXPRO QUICK-NUT ANGLE GRINDER LOCK NUT Tool Free These Industrial quality locking nuts fit all common 115mm and 125mm (5″) angle grinders Replaces existing or lost lock nuts. Tool Free disc changing, these nuts feature a unique tap that allows you to change discs without the need for an angle grinder spanner Features Fits:115 and 125mm angle grinders Fits: 4.5″ & 5″ angle grinders Tool free design Thread 14 x 2.0mm