Features & Specifications:

Outside diameter : 1.386 in
Bore diameter : 18 mm
Bolt circle diameter : 1-21/64 in
Length through bore : 7/8 in
Maximum hub outside diameter : 1-15/16 (Steel) in, 2-3/16 (Class 30 Gray Iron) in, 2-3/8 (Class 20 Gray Iron) in 1-15/16 (Steel) in 2-3/16 (Class 30 Gray Iron) in 2-3/8 (Class 20 Gray Iron) in
Number of bolt holes : 2
Bushing size : 1008
Screw thread size : 1/4-20 in
Screw length : 1/2 in
Keyway size : 6 x 2.8 mm
Bore type : Finished w/ Keyway
Screw torque : 55 in-lbs