Melling Chain Tensioner Guide - BD311 Part #: BD311 Line: MEL Melling Chain Tensioner Guide 1 Year Limited Warranty Material: Aluminum, Nylon Height (in): 1.500 Inch Height (mm): 38mm Length (in): 7.370 Inch Length (mm): 187mm Width (in): 0.870 Inch Width (mm): 22mm Adjustable: Yes Hardware Included: No Bracket Included: Yes Mounting Hole Diameter (in): 0.500 Inch Spring Included: No Number Of Mounting Holes: 1 Shoe Included: Yes Mounting Hole Diameter (mm): 12mm Show More Show Less