BK1/S500-3.15-R BK1/S500-3.15RY BK1/S500-315-R BK1/S500-32-R BK1/S500-400-R BK1/S500-40-R BK1/S500-4-R BK1/S500-500-R BK1/S500-50-R BK1/S500-5-R