4x CARBIDE TIPPED VALVE SEAT CUTTER. TO CUT HARD SEAT RINGS EASILY. 35m-45,28m, 33m, 35m-70 & 6.60 mm Guide Stem WITH STORAGE CASE 1/2″ x 20 UNF THREAD 1″ TO 3 45,30,70,35 DEGREE SIZES AVAILABLE. T- Handle & Guide Stem as Shown in the above image is Not Included with This CAN BE USE FROM BOTH SIDES 180 FACE & 45 DEGREE ALL SIZES STEMS & ARBOR ALSO AVAILABLE AT OUR E BAY STORE.