Manufactured from high grade steel machined and ground to precise tolerance these cut off tool holders support the blade over a wide area thereby reducing the possibility of blade breakage. The locking device enables the blade to be held securely and also enables rapid assembly. Especially designed clamp plate provides both downward and sideways pressure along a large area of the top edge of the tool ensuring complete rigidity. Straight Shank Supplied with key but without blade Holder Size: 5/16 x 9/16 x 3-11/16 (7.93 x 14.28 x 93.4mm) Blade Size: 1/16 x 5/16 x 3-1/2 (1.52 x 7.93 x 88.9mm) *Cut Off Blade Sold Seperately (GZ12221)