Sorby's Multi-Tip Hollowing Tool (31747) and Hollowmaster (39659) combine to take you from start to finish in your hollowing projects. The Multi-Tip Hollowing Tool features a broad 3/4"" flat surface in permanent contact with the tool rest, giving you maximum stability and control for anything from light to aggressive application. Two hollowing tips are secured to a swiveling clamp to enable straight hollowing and undercutting under a rim. Also includes a scraper blade with three working faces for round, half round and square scraping all in one. The Hollowmaster starts where the Multi-Tip finishes. Also featuring a 3/4"" flat surface, its swan neck design can reach further into blind holes to hollow shapes for vases and more. Comes with a swiveling hollowing cutter and a full round scraper cutter for fine finishing.
I thing Hollowing Tools SOV-RS for Sorby Sovereign Turning Tool System-Tools are seem as total top product in the market. As you can see popularity is high and also price 37.59 is very nice.