13pcs Bi-metal Hole Saw Set

13pcs Bi-Metal Hole Saw set ITEM No.: 1000.000130 Details: 6pc Hole Saws: 19, 22, 29, 35, 38, 44,51, 57, 64mm (3/4", 7/8", 1-1/8", 1-3/8",1-1/2", 1-3/4", 2", 2-1/4", 2-1/2") 2pc Arbors: 1000.001,1000.010 1pc Adaptor: 1000.022 1pc Pilot Drill: 1000.019 Introduction: 1)M3/M42highspeedsteelteeth Beelectron-beamweldedtotoughalloysteelbaceforheavydutycutting. 2)Diameter:14-210mm(9/16"to8-17/64") 3)CuttingDepth:38-47mm(1-1/2"to1-7/8") 4)Knockoutholesalloweasycoreremoval 5)ArborsExtension:fordifficult-to-reacharea. Length:140-450mm(5-1/2"to18").Diameter:11mm(7/16") 6)HSSPilotDrills: Usedforguidingandkeepingtheholesawinthecorrectpositionduringthesawingoperation. Length:72-104mm(2.8"-4.1").Diameter:6.35mm(1/4") 7)ArborAdapter:UsedtoAdaptsmallarborthread(1/2"-20UNF)tolargethread(5/8"-28UNF) 8)EjectorSpring:forpilotdrills,tofacilitatecoreremoval. 9)Shanks:Round/Hex/SDS