1.15years professional manufacutre 2.sds plus drills 3.material:40cr&Yg8c 4.shank:sds plus 5.export to USA,EUR,JAPAN. SDS Plus Shank Electric Hammer Drill Bitsuse high quality 40CR steel material.Take high-temperature manual welding in 850°C.YG8 Carbide tip.Use: Concrete,Clinker,Masonry,Stone.welcome to contact with us! sds-plus shank electric hammer drill bit