M3 BI-METAL HOLE SAW KITS, HOLW SAWS SIZES: 19/ 22/ 25/ 32/ 35/ 38/ 44/ 51/ 57/ 64/ 76MM; ARBORS: ROUND SHANK 1/4" (RD03 -1001) FOR SIZES: 14~ 30MM, HEX SHANK 3/8", CHUNK SIZE 3/8 (RD03-1006) FOR SIZES: 32~ 200MM, ADAPTER: (RD03-1050) - FITS ARBORS RD03-1001/2/3