Comparison : Item # 01-04-30, 04 Series: Flat Board Side x .187 Chassis Hole
Item # 01-04-40, 04 Series: Flat Board Side x .187 Chassis Hole
Item # 01-04-50, 04 Series: Flat Board Side x .187 Chassis Hole
Item # 01-04-60, 04 Series: Flat Board Side x .187 Chassis Hole
Item # 01-04-70, 04 Series: Flat Board Side x .187 Chassis Hole