✿ Hole position1.5-10mm , suitable for hexagonal wrench with size less than 11mm ✿ Tip of each is precisely machined to an exact fit onto the screw head ✿ Chamfered edges achieve easy and smooth insertion into the fastener heads ✿ The inner six corner wrench and the force are and hard ✿ Color splicing design is beautiful and generous , with rotary locking function , strong and firm, Manufacturer: Watreketal