Clarks range of MTB/Hybrid pads use compounds that will give consistent high performing braking whilst not damaging rims. Brake pads are compatible with all V-Brake/Cantilever brake systems. Specifications CLR501 MTB 70mm V-Brake Cartridge Inserts 1 Pair MTB/V type brake pad Pad length: 70mm Threaded post pad for linear pull brakes Pad Type: Interchangeable Cartridge CLR505 MTB 50mm Cantilever Post Style Brake Pads 1 Pr MTB/V type brake pad Pad length: 50mm Pad Type: Non Threaded Posts, Integral Block CLR510 MTB 70mm Threaded V-Brake Blocks 1 Pr V Type cantilever brake block Pad length: 70mm Pad Type: Threaded Posts, Integral Block CLR513 MTB 72mm XTR Threaded V-Brake Shoes/Pads 1 Pr 72mm Brake Pad Interchangeable cartridge Extra set of brake cartridges included Aluminium carrier for weight reduction CLR515 MTB 55mm Threaded V-Brake Brake Blocks 1 Pr V Type cantilever brake block Pad length: 55mm Pad Type: Threaded Posts, Integral Block Threaded post pad for linear pull brakes CLR520 MTB 70mm Post Type V-Brake Blocks 1 Pr V Type cantilever brake block-post type Pad length: 70mm Pad Type: Non Threaded Posts, Integral Block For linear pull brakes with non-threaded posts CLR522 MTB 72mm XTR Post Type V-Brake Shoes/Pads 1 Pr XTR Upgrade-post type Pad length: 72mm Pad Type: Interchangeable Cartridge Threaded post pad for linear pull brakes Complete with extra free pads CLRB9020 MTB 55mm Cantilever Post Pad Length - 55mm Pad Type - Non Threaded Posts, Integral Block NON-THREADED post type FOR LINEAR pull brakes with non-threaded posts CLRS959P 72mm Replacement Pads for CPS959 Rim Compatibility : Standard Rim Pad Length : 72mm Pad Type : Replacement Insert Aqua design: Allowing greater water displacement