Free png and vector icons by Iconlandia

Quantity and quality, both characteristics are included in the package.
The “Blue Extended” free icon set is packed with 238 high quality free icons in the following sizes:16x16px, 24x24px, 32x32px, 64x64px and 128x128px in 32-bit transparency PNG file format. The icons also come in ICO and ICNS file formats in 128x128px size.