Sanrok supplies non asbestos composition brake types Designed for various kinds of rolling stock requirements. The product range in this category is low friction l type for freight / passenger stock & locomotives. We also supply ll type brake blocks with a direct replacement of cast iron brake blocks. Whereby no modificatimoving towards the brake system or brake rigging is required. High friction k type series are also supplied for passenger freight and suburban emu s. Very high friction h type brake blocks are also efficient of, Manufactured co friction 0. 3 to 0. 48. The brake blocks supplied confirms to uic 541 and aar m, 926 standard.