NACHI Drill Bits HSS Bulk Lot 112 pcs

This is a set of items ① to ④ shown in the first image.
Unless otherwise stated in the product description below, all materials are HSS.
① is believed to be a set of 50 NACHI bits, although the case does not show this. The 2.4mm bit is missing. The case opens and closes smoothly. The case has been cleaned with hot water and treated with rust-preventive spray.
② Dimensions, from top to bottom: 13.0/12.0/11.0/9.3/9.0/8.8/8.5/8.4/8.2/7.0/6.9/6.6/6.5/6.0
The tip of the 9.3mm bit appears to have been machined.
The 9.0/8.8/8.5/7.0/6.5mm bits are marked SKH9, not HSS.
The 8.8mm bit is extremely short and its tip appears to have been machined, suggesting it may be a broken bit that was re-worked.
③ Dimensions: 2.5mm - 1 pc / 3.0mm - 3 pcs / 3.2mm - 2 pcs / 3.4mm - 4 pcs / 3.6mm - 1 pc / 3.9mm - 2 pcs / 4.0mm - 1 pc / 4.2mm - 2 pcs / 4.3mm - 3 pcs / 4.4mm - 1 pc / 4.5mm - 1 pc / 4.8mm - 3 pcs / 5.0mm - 1 pc / 5.1mm - 1 pc / 5.3mm - 1 pc. They are not arranged in any particular order.
④ The top set of bits are marked SKH9. Dimensions: 3.0/3.2/3.6/3.9/4.0/4.3/4.4/5.0mm - 1 pc each. 3.5/4.7mm - 2 pcs each. 1 pc is of unknown size.
The middle set of bits have unknown size and material markings.
The bottom two bits are 2.0mm and 2.5mm.

Some items show signs of use, while others do not. Some markings are difficult to see, while others are clear. To the best of our knowledge, all bits are marked NACHI.
However, approximately 10 of the smaller diameter bits in case ① do not have markings, so they are identified as NACHI products based on their storage in the case.
All drill bits have been wiped clean and treated with rust-preventive spray.
There are no major chips or severe dirt, but the performance has not been tested, so please understand this.
Also, there may be overlooked markings or misidentification, so sensitive individuals should refrain from purchasing.
Items sold as a set will be loosely bundled for packaging. Size markings will not be provided for bits where the dimensions are difficult to read, so please check the sizes after purchase.