Garlick Flinn UK Concave Convex 4 Piece Cabinet Scraper Set Made by the highly respected Thomas Flinn Tool Company of England Convex and concave sizes include: . 3/8,  5/8 , 7/8, 1, 1 1/8, 1  and 1 . .032" thick made of the finest Sheffield medium carbon steel Made of the finest European medium carbon steel Hardness of 40/42 Rockwell C the perfect balance of edge retention and flexibilty