This is the 2.5mm Hex Driver from O.S. Speed. FEATURES: Aluminum constructed handle Anodized black in color Size printed on handle for easy identification Hollow handle for storage INCLUDES: One 2.5mm Hex Driver SPECS: Total Length: 200mm (7.9") Handle Length: 95mm (3.7") Handle Diameter: 17mm (0.67") cnh 6/16/10 ir/jxs