Original product manufacturer and dBraun - 81387936 - Combi-pack 30B - Recharge Grid + knives Veterans Shavers Series 3 / Syncro Pro / Syncro / Smart Control3 / Tri Controléjà old, but still in stock. Price a little high. Delivery strictly on time. It is advantageous to change the guards and cutters annually. It is best to order 2 packs directly to avoid the cost of delivery or stock-outs. Warning: I recommended 2 left of this article July 25, 2013, its characteristics have changed: The reference 81387936 / 30B can not (more) to adapt to the Razor Series 3 / Model 5747, Model 4815. It is now inadequate because of the grid locking notches are different (deeper). A delivery of two copies, to find out, open the packaging of the article, we can no longer return to Amazon! Beware BRAUN references. AMAZON misled me by indicating that the 81387936 reference is newer but can replace the previous one, because it is compatible, this is false.