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Each Shape Quantity and Size:5 x Ball Head: 1mm, 1.5mm, 2mm, 2.5mm, 3mm(Dia.); 5 x Cylinder Head: 1x8mm, 1.5x10mm, 2x10mm, 2x11mm, 3.3x12mm(Dia.*Length)5 x Cylinder + Round Bottom: 1.2x8mm, 1.5x10mm, 2x10mm, 2.5x10mm, 3.2x11mm(Dia.*Length)2 x Flame Head: 2.8x5mm, 2.5x10mm(Max. Dia*Length)1 x Trumpet Head: 2.7x8mm(Max. D*Length)1 x Oval Head: 2.7x4mm(Max. D*Length)11 x Taper Head: 1.5x12mm, 1.6x13mm, 1.8x14mm, 2.1x12mm, 2.8x5mm, 3.1x13mm, 3x16mm, 3x13mm, 2.2x10mm, 1.9x10mm, 1.6x10mm(Max. D*Length)30pcs diamond point bit set in a protective plastic case, can be used for a variety of hole making and grinding tasks in glass, ceramic, stone, etc.