Item Type: Drill Bit Shank Adaptor Material: High Carbon Steel Colour: Silver Specifications: Approx.220mm or 8.7in Usage: Used for the connection of electric hammers and impact drilling equipment and the conversion of water drill hole openers 1Hole Saw Accessory: This shank adapter is used for the connection between electric hammer or impact drill and hole opener, which is an indispensable and important tool. 2Excellent High Carbon Steel Made: Made of excellent high carbon steel material, heat treated, has high strength and strong wear resistance, ensures long service life. 3Welding Technology: Adopt high frequency welding technology, the welding opening is very strong, and the inner and outer welds are smoothly. 4Standard Size: The core drill adapter is 220mm, with standard interface size, ensuring perfect connection with hole saws and electric drills. 5Good Replacement: This shank is a wonderful replacement tool for broken one, with good adaptability, comes with a drill bit, hex wrench and nut to use.1 x DrillBitShankAdaptor 1 x Drill Bit 1 x Hex Wrench 1 x Nut