Renold Blue Box 20B-1-NO4 BS Simplex Inner Link 1-1/4 inch Pitch
Renold No. 4 Connecting Link: These are complete assemblies for use with all sizes and types of chain. The unit consists of two inner plates pressed on to the bushes which carry the rollers. (Inner links for use with bush chains have no rollers).
An extensive product line of European (BS), ANSI and din standard chains
Consistent quality
Depth of inventory 
| Item Description | - | BS Simplex Inner Link |
| Brand / Quality | - | Renold - High Quality |
| Chain Pitch | - | 31.75mm = 1.25 (1-1/4) inch |
