1.1/1.2/1.3/1.4/1.6/1.7/1.8/1.9mm Set of 8 bits Compatible blade for Pin Vise. Pin Vise it self can be found by these product code below: 4562349873852 4562349873845 4562349873838 To avoid brakeage, : Put pre-hole when making a hole with this product. : Do not push this product when you spin it to make a hole, please do it with only it’s weight.