คุณลักษณะ

• Used when tightening wood.
• At first it is driven, and at last it is screwed and tightened.
• The head is hexagonal and can be tightened with a box wrench.
• Made of iron with UNIQLO plating (light blue color) to improve corrosion resistance.
• It is used when it does not need to be tightened as hard as bolting, or when wood screws are not strong enough.
• It is used in the construction, civil engineering and shipbuilding industries.
• Has more corrosion resistance than fabric.