The Simson Brake Pads Capiler Magura hydraulic are suitable for HS33 / HS11 type brake systems. The brake Pads are suitable for both front and rear brakes. Use an Allen key to remove the worn brake Pads from the brake. Mount the new brake Pads with an Allen key in the right direction, on both sides equidistant from the rim. The Simson brake pads are supplied per two pieces.