Mini-X Kit Includes:     MiniX Dowels/100 count (Birch)     MiniX TruFit Drill Bit Dowel Length: 1-5/8"Cap Dia: 1/4" For joining wood up to 3/4" thick1X Kit Includes:     1X Dowels/50 count (Birch)     1X TruFit Drill BitDowel Length: 2-3/4"Cap Dia: 7/16"For joining wood up to 1-1/8" thick2X Kit Includes:     2X Dowels/50 count (Birch)     2X TruFit Drill Bit Dowel Length: 3-1/2"Cap Dia: 1/2" For joining wood up to 1-5/8" thick