Low Energy Consumption: All adapters are completely tested: aging test, supplies test, over-voltage test, over-heat test, security test; the comb points immoderate performance and occasional energy consumption. Product Type: The sturdy for head comb. Precision Edge: Exchangeable trimmer head is designed for accurate shaping. Wide Application: Suitable for HC3400 HC3410 HC3420 HC3422 HC3426 HC5410 HC5440 HC5442 HC5446 HC5447 HC5450 HC7452 substitute hair clipper. Color: gray Material: ABS Package Contents:1 x comb Only the above package content, diverse merchandise will not be included. Note: Light and assorted displays may cause the color of the item in the photograph barely diversified from the real thing. The measurement allowed error is +/- 1-3cm.