WHITE SAPPHIRE Give your carvings the award winner’s edge with Sapphire jewel points! Jewel points are universally accepted by top carvers, but Sapphire points are arguably the best overall choice. They remove wood much faster than diamond or even coarse ruby. Sapphire leaves surface slightly rougher than coarse ruby, fine enough for final finish on some carvings or may be made progressively smoother with Coarse Ruby, Fine ruby & finally diamond. Sapphire will outlast conventional steel cutters by many times.Top speed 30,000 RPM. Shanks 3/32", Length 2". Switzerland.