Easy to install. Clean the machine before installation. Compatible with: Model: 1 110 120 130, 130s-1 and 815 type 5683. Model: 130s-1, 140, 150, 150s-1 and 835 type 5682, 5684. Model: 140, 150 and 150s -1 Type 5685 Make sure the razor model is correct. Model Number: For Braun 11B 684 Series Product Type: Electric Shaver Parts Model: 11B Size: 4.6 x 4 x 3.8 cm Material: ABS + Stainless Steel Color: Black + Silver Package Content: 4 x Shaver Replacement Foil 4 x head shaver bladeOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.