Fits all Braun Contour, Flex Integral, Flex Integral System, Flex XP, and Flex Integral Ultra Speed Shavers Fits Models: 370, 390, 390CC, 5000, 5005, 5010, 5015, 5311, 5312, 5314, 5315, 5316, 5317, 5410, 5414, 5415, 5416, 5441, 5442, 5443, 5466, 5478, 5503, 5504, 5505, 5510, 5515, 5520, 5525, 5550, 5600, 5610, 5611, 5612, 5613, 5614, 5625, 5720, 5721, 5722, 5723, 5724, 5735, 5736, 5737, 5738, 5770, 5774, 5775, 5776, 5790, 5873, 5874, 5875, 5876, 5877, 5884, 5885, 5887, 5888, 5895, 5897, 6012, 6015, 6312, 6510, 6512, 6515, 6518, 6520, 6521, 6522, 6525, 6550 (may be partial list)

Fits Types: 5465, 5466, 5468, 5476, 5477, 5478, 5503, 5504, 5505, 5506, 5507, 5703, 5704, 5705, 5706, 5720, 5721, 5722, 5723, 5724, 5735, 5738

Part also known as 31S (silver)

Does NOT fit Freeglider models: 6690, 6680, 6610 or Series 3 type 5775