【High Precision Cutting System】: The blades compatible with philips SH30 replacement heads are dual precision cutting system with lift and cut technology. 360 degrees without dead ends. 【Compatible with Multiple Series】: Our series 3000 replacement head compatible with philips norelco series 3000 replacement heads. SH30 Replacement Heads for Shaver series 3000, 3800,PT724/41, PT729/41, S738/17, S738/82, S1150/81, S1160/81, S1570, S1560/81, S3310/81, S3310/86, S3560/81, S3560/86 【Double Blade Cutting】:The first blade raises each hair while the second blade comfortably cuts below skin level, for really smooth results. 【Package Lnclube】:9 Individual Replacement Heads included. For maximum shaving performance, it is recommended to replace your replacement heads series 3000 once every 12 months 【High Precision Cutting System】: The blades compatible with philips SH30 replacement heads are dual precision cutting system with lift and cut technology. 360 degrees without dead ends.