The Wilwood FDLI 1.38/1.38 caliper is paired with a .50 rotor and an anodized finish as listed, offering a compact radial-mount caliper configuration. The listing identifies the caliper sizing, rotor pairing, and surface treatment, indicating this FDLI combination is intended for installations that require the smaller 1.38 FDLI geometry with a .50" rotor clearance and anodized appearance.
Wilwood 1.38/1.38 FDLI Caliper .50 Rotor Ano