General description US PRO Ratchet Spanner Set includes 12 pieces of metric gear ring combination wrenches ranging from 8mm to 19mm. This set is manufactured from CRV steel and features a mirror polished chrome finish for durability and ease of use. The smooth 72 teeth ratchet action allows for efficient operation. Technical specifications Material: CRV steel Finish: Mirror polished chrome Ratchet action: 72 teeth Gear ring: 40CR-V Hardened Standard: DIN Standard 3113 Approximate lengths: 8mm - 140mm 9mm - 150mm 10mm - 160mm 11mm - 165mm 12mm - 170mm 13mm - 180mm 14mm - 190mm 15mm - 200mm 16mm - 210mm 17mm - 225mm 18mm - 235mm 19mm - 245mm Other information 1 Year Warranty Included