Titanium Step Drill Bit Set & Automatic Center Punch, High-Speed Steel, 6 PCS Hex Shank Pagoda, Totally 50 Sizes, Double Cutting Blades, Aluminum Case Included attapulgite clay adsorbent [Powerful]: Metric and inch-inch and

[Powerful]: Metric and inch-inch and millimeters are exchanged with one key

Reducing Connecting Adapter Glass Joint

500ML Short Path Distillation Kit

Power supply

Titanium Step Drill Bit Set & Automatic Center Punch, High-Speed Steel, 6 PCS Hex Shank Pagoda, Totally 50 Sizes, Double Cutting Blades, Aluminum Case Included attapulgite clay adsorbent [Powerful]: Metric and inch-inch and[Specifications and Models]: The kit includes No. 1 drill bit (10 step sizes): 1 4", 3 8", 1 2", 5 8", 3 4", 7 8", 1", 1 1 8", 1 1 4", 1 3 8"; No. 2 drill bit (12 step sizes): 3 16", 1 4", 5 16", 3 8", 7 16", 1 2", 9 16", 5 8", 11 16", 3 4", 13 16", 7 8; No. 3 drill (9 step sizes): 1 4 ", 5 16", 3 8", 7 16", 1 2", 9 16", 5 8", 11 16", 3 4"; No. 4 drill (13 step sizes): 1 8", 5 32", 3 16", 7 32", 1 4", 9 32", 5 16", 11 32", 3 8", 13 32", 7 16", 15 32",