VALVE SEAT & FACE CUTTER SET 21 PIECE CUTTER SET CUTTER SIZES ARE AS UNDER:- 20° Bore Cutter – 2” , 1-3/4” , 1-1/2” , 1-1/4” 30° Face Cutter -- 1-7/8” , 1-3/4” , 1-3/16" 45° Face Cutter – 2-1/4", 2-1/8", 2” , 1-7/8” , 1-3/4” , 1-5/8” , 1-9/16” , 1-1/2” , 1-7/16” , 1-3/8” , 1-5/16” , 1-1/4” , 1-3/16” , 1-1/8” Handle – 1pc, Rod – 1pc. Guides – 7mm , 8mm , 8.5mm , 9mm , 9.5mm , 10mm , 11mm , 5/16” , 11/32” All Pilots Are Soft And Centered Both Ends , For Easy Reduction Of OD To Suit Your Requirements This Item Is Manufactured From High Grade Carbon Steel, Each Cutter In Accurately Grade For Best Results, Ideal For The Vintage Car Or Old Engine Restorer. THIS SET IS MADE FROM CARBON STEEL, only to be used on Cast Iron or Alloy Seats ! They will not cut Modern Hardened Seats