Manufactured from hardened and tempered Chrome Vanadium steel with a fully polished mirror finish. 12-Point ratchet/fixed WallDrive® ring ends. 72-Tooth ratchet requires only 5 rotation to pick up the next tooth. WallDrive® rings grip the wall, not the corners, giving up to 30% more torque. Supplied in EVA foam storage tray. SEALEY PREMIER - One of a comprehensive range of Premier Hand Tools, suitable for daily professional use. DURABLE - Manufactured from hardened and tempered Chrome Vanadium steel with a fully polished mirror finish. SMOOTH RATCHET RING - 72-Tooth ratchet requires only 5 rotation to pick up the next tooth. 13PC SET - Contents: 8, 10, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 24mm. EXTRA LONG - Lengths: 230/445mm. SUPPLIED IN EVA FOAM STORAGE TRAY - For easy storage solutions. LIFETIME GUARANTEE*.