TS-4 - Trim 7mm dia , TS-5 Trim 9.5mm dia TS-10 - Straight 6mm dia , TS-11 - Straight 8mm dia TS-2 - Corner Round 3R, TS-15 - Round nose - 12mm Specially treated blade to ensure a fast,sharp, precise cutting and long lasting. Length - 2 inch..Heavy duty 35mm Hinges Boring Bit