Technical data: Diameter [mm]: 5 Working length [m]: 55 Total length [mm]: 90 Unit of measurement: pcs Shank: cylindrical For impact drilling in very hard materials such as granite Exceptionally hard and wear-resistant carbide tip produces up to 40% more holes This The product is appreciated by stonemasons due to the possibility of impact drilling in natural stone such as granite Specially formed cutting edges are characterized by greater durability ** Illustrative photo.