The GC120H 150x16x12.7 whetstone from Makita is a high-quality abrasive that has been specially developed for use with double sanding blocks, such as the GB602 model. With a grit size of 120, this whetstone is ideal for working on materials such as aluminium and other non-ferrous metals. The whetstone is made of silicon carbide, a material known for its high hardness and durability. The design of the grindstone allows for efficient heat dissipation, which extends the life of the product and ensures consistent grinding performance. With a diameter of 150 mm and a maximum speed of 4250 rpm, this grindstone is suitable for various metalworking applications. Its compact design and precise dimensions make it an indispensable tool for professionals and hobbyists alike. Silicon carbide abrasive for high hardness and durability. Suitable for working on aluminium and non-ferrous metals. Maximum speed of 4250 rpm for efficient sanding. Compact dimensions for versatile metalworking applications.