Features and Benefits:•Radius V-Groove design creates an anti-slip and prevents rounding of the fastener.•Box end is offset by 15 degrees to provide clearance for your fingers and other obstructions near the fastener.•Fully polished to eliminate oil and grease build up.•Radius Corners to grip the flat sides of the fastener head instead of the corner to prevent round-off.•Chamfered box end allows for fast and easy guidance onto fasteners.•Available in the 9917MA set•Lifetime warrantySunex Tools V-groove combination wrenches are made from durable chrome vanadium alloy and finished with chrome plating to ensure durability. The V-groove design that reduces wear on the fasteners. Get Sunex Tools for all of your combination wrench needs