PREMIUM MATERIALS: Made from high-quality materials, this replacement shaving head is functional, efficient, and easy to use. WIDE COMPATIBILITY: Compatible with Philips models PT710, PT715, PT720, PT721, PT722, PT724, PT725, PT726, PT727, PT728, PT730, PT731, PT732, PT734, PT735, PT736, PT737, PT739, PT786, PT810, PT815, PT860, PT866, PT868, PT880, AT810, AT811, AT814, AT891, AT893, AT910, AT911, AT750, AT751, AT752, AT753, AT754, AT757, AT758, AT798, AT891, AT926, and other compatible models. INSTRUCTIONS FOR USE: Replace shaving heads every eighteen months for optimal performance. Easy to install. Clean the shaver before installation. PERFECT PERFORMANCE: Replacing the shaving heads provides up to 25% more efficient shaving. Clean the product regularly to maintain peak performance. REPLACEMENT SHAVING HEADS: These replacement heads restore your shavers performance and deliver a closer shave. DURABLE AND EASY TO CLEAN: The shaving head is constructed with high-quality ABS and stainless steel, and includes a practical cleaning brush. RAZOR HEAD SIZE: Approximately 60 x 50 x 30 mm (2.36 x 1.97 x 1.18 inches). PACKAGE INCLUDES: 1 x Replacement Shaving Head