POWER-POLE Side Spacer For Bob's Machine Jack Plate | AP-spcr-side-BKPOWER POLE Side Spacer for Bob's Machine Jack Plate, AP spcr side BK, is a purpose built accessory designed to complement your Bob's Machine jack plate setup. Product Type: Side Spacer Model: AP spcr side BK Compatibility: Bob's Machine Jack Plate Used with Bob's Machine Jack Plate installations, this spacer helps maintain proper spacing and alignment, contributing to a clean, secure fit and reliable performance in your custom setup.