BK/S500-V-6.3-R BK/S500-V-630-R BK/S500-V-63-R BK/S500-V-800-R BK/S500-V-80-R BK/S500-V-8-R BK/S501-1.25-R BK/S501-1.6-R BK/S501-100-R BK/S501-10A