This product is very practical Use inside and outside corner tools to achieve perfect 90-degree right-angle plastering It is the for ideal tool to handle plastering angles at an for ideal 90 degree angle with minimal effort The inner and outer corner trowels are your tools for plastering wall corners stainless steel and it will provide long-term strength and use for many years When applying mud around the notch, the external angle tool can easily achieve a perfect 90-degree internal angle, Manufacturer: Bottone