The IRWIN carbide tipped mortar rake kit is a power tool accessory for the fast & efficient removal of mortar & cement joints in brickwork repointing applications & for chasing out channels for the installation of cable, pipes & switchboxes. Supplied with 3 aluminum reduction rings (41mm, 42. 5mm & 43mm), meaning that the sole plate fits the most popular angle grinders on the market. The sole plate ensures consistent clearance depth & is adjustable for variable clearance depths. It is less intrusive to surrounding brickwork & is a good alternative to working with demolition chisels or grinding discs, which can easily cause damage. Please read the instruction manual carefully before using the mortar rake. Only use mortar rakes with adaptor & sole plate.