Model Number: GM-DB109 Brand Name: GOLDMOON Key Specifications/Special Features: 11pcs SDS Hammer Drill Bits SetSize:5, 6mm x 110mm6, 8, 10mm x 160m10, 12mm x 210mm10, 12, 16, 20mm x 450mmSurface treatment are available:Galvanized finish,Nickel Plated,Chrome coated,Black finish,Sandblasted finish.Material can be selected according to customers' requirements.Drill Bits set are availableInch size are available