New old stock slip rings. Listing is for one set of two. The 30001 and the 30002 are the same, just superseded. If more than one is pictured it is to show difference in packaging and condition. See photos for detail and condition. Description: Slip Ring OEM(s): Lucas Slip Ring ID: 0.354in / 9mm Slip Ring OD: 0.992in / 25.2mm Length: 0.846in / 21.5mm Notes: Two Piece Design Application: Lucas Alternators Weight: 0.06 lbs / 0.03 kg Superseded By: J&N 313-30002 References: J&N 313-30001 Arrowhead ALU3503 Lucas 54160288, 60600748, UAB100