The Makita 4-1/2 in. Diamond Blade, Segmented Turbo, General Purpose (E-23313) is for use with all 4-1/2 in. angle grinders (sold separately). The 4-1/2 in. Diamond Blade features 50% taller segments which deliver longer life with faster and smoother cuts. The 4-1/2 in. Diamond Blade are engineered for up to 4-times longer life than competitor blades. It features an optimum bond matrix that provides a faster, longer lasting, and smoother cutting experience in conc concrete, block, brick, and pavers.The E-23313 provides optimal cutting in both dry and wet applications for added versatility. The E-23313 blades are carefully tensioned for less vibration and a superior user experience. The 4-1/2 in. Diamond Blades feature up to 45% faster cutting than competitor turbo blades. Maximum RPM is 13,300.