Maintain peak shaving performance with genuine Panasonic inner blades. This OEM part is compatible with Panasonic ARC3 3-blade and ARC4 4-blade men’s electric shavers including models ES-LA63-AA, ES-LA63-S, ES-LT67-A, ES-LL41-K, ES8243AA, ES8103S and more. The inner cutter blocks work with outer foils to cut hair cleanly and comfortably. Replace the blades every 2 years and outer foils yearly to keep your shaver working like new. Precision engineered and made in Japan to fit and perform flawlessly. Choose authentic Panasonic parts and experience a close, gentle shave just like with a brand new shaver. Keep your Panasonic electric shaver performing at its best with replacement inner blades.