Hey machinists! This is a solid little set if you're doing internal threading work on a lathe. You get four different boring bars – the SNR0008K11, SNR0010K11, SNR0012M11, and SNR0013M16. They're made from 40Cr steel, which is tough stuff. The shank diameters are 8mm, 10mm, 12mm, and 13mm, so you've got options for different size holes (minimum bore diameters range from Φ11mm to Φ17mm). They all do internal right-hand threads. The kit also throws in a bunch of carbide inserts: three of the 11IR A60 type (good for pitches from 0.5mm to 1.5mm) and a whopping eleven of the 16IR AG60 type (handles pitches from 0.5mm to 3.0mm). The inserts have a TiN coating – that's the gold-colored one – which is great for wear resistance and cutting steel. Each bar comes with its matching screws, and you get the T8 and T15 wrenches needed to tighten everything down. The bars have a simple, sturdy design with a tight bolt, perfect for getting into smaller holes. Everything arrives together: the 4 bars, 14 inserts, and the wrenches. Just a heads up, you'll need your own lathe and know-how. If you're tired of buying these tools one by one, this bundle saves you the hassle and gets you set up for a range of threading jobs.
