These tools are the ‘Al-Orr’ brand marble masonry.
They are made off 3/8” shank.
The tungsten carbide tip blade ranges in size from 1/8” (3mm) to 3/8” (10mm).
The tools are for use on marble, slate, sand stone and other soft stone.
The tools come with three different striking ends; Hammer Head, Mallet Head and Pneumatic.