10B-2 Cl Sc Type Bs RllrChn, Double Strand, 5/8" Pitch,10B-2Hmcl,PK5 Spring clips are supplied with slip fit closing plates for ease of assembly in the field.. SENQCIA Hi-Max spring clip type British Standard connecting links are manufactured in accordance with the ISO 606B international roller chain standard. Connecting links are used to connect the ends of the roller chain strand into an endless loop.