Mirka Hand Sanding Block 70 x 198mm Abranet complete with 20/28mm adaptor for attaching to vacuum. Mirka hand sanding blocks are especially designed for hand sanding with Abranet but can also be used in combination with other hook & loop products. The hand sanding blocks are connected to a dust extraction system by hose to ensure dust-free sanding or can simply be used on their own with sanding strips. We also supply these hand blocks in 70x125mm and a larger 70x420mm.